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Center for THz-driven Biological Systems

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2017


Min, S.-H., Kwon, O., Sattorov, M., Jung, H., Baek, I.-K., Kim, S., Jeong, J.-Y., Jang, J., Hong, D., Bera, A., Barik, R. K., Bhattacharya, R., Park, G.-S. "Effects on electronics exposed to high-power microwaves on the basis of a relativistic backward wave oscillator operating on the X-band" Journal of Electromagnetic Waves and Applications

 

Baek, I.-K., Bhattacharya, R., Lee, J. S., Kim, S., Hong, D., Sattorov, M., Min, S.-H., Kim, Y. H., Park, G.-S. "Uniform high current and current density field emission from the chiseled edge of a vertically aligned graphene-based thin film"

 

Baek, I.-K., Sattorov, M., Bhattacharya, R., Kim, S., Hong, D., Min, S.-H., Park, G.-S. "Origin of Sideband and Spurious Noises in Microwave Oven Magnetron"

 

Min, S.-H., Kwon, O., Sattorov, M., Jung, H., Baek, I.-K., Kim, S., Bera, A., Barik, R. K., Bhattacharya, R., Park, G.-S. "Design study of GW-THz wave transmission without mode competition in an oversized relativistic backward wave oscillator" IEEE TRANSACTIONS ON PLASMA SCIENCE 45 (4), 610

 

Son, H., Choi, D.-H., Park, G.-S. "Improved thickness estimation of liquid water using Kramers–Kronig relations for determination of precise optical parameters in terahertz transmission spectroscopy" Opt. Express 25 (4) 4509-4518

 

Min, S.-H., Kwon, O., Sattorov, M., Baek, I.-K., Kim, S., Jeong, J.-Y., Hong, D., Park, S., Park, G.-S. "Miniaturized two-stack Blumlein pulser with a variable repetition-rate for non-thermal irreversible-electroporation experiments" Review of Scientific Instruments 88 (1), 014704

   

 

2016


Min, S.-H., Kwon, O., Sattorov, M., Jung, H., Shin, S.-H., Baek, I.-K., Kim, S., Park, S., Park, G.-S. "Characteristics of a transient axial mode from the formation of anode plasma in a gigawatt-class L-band magnetically insulated transmission line oscillator" Physics of Plasmas 23 (6), 063120

 

Choi, D.-H., Son, H., Jeong, J.-Y., Park, G.-S. "Correlation between salt-induced change in water structure and lipid structure of multi-lamellar vesicles observed by terahertz time-domain spectroscopy, Chem. Phys. Lett, 2016, 659, 164-168

 

Wang, Y., Wei, Y., Li, D., Wei, W., Guo, G., Zhang, L., Ding, C., Gong, Y., Feng, J., Park, G.-S. "A Novel Method to Obtain the Slow-Wave Dispersion Characteristics of Slow-Wave Structures" Journal of Infrared, Millimeter, and Terahertz Waves 37 (11), pp. 1055-1060
   

Liao, M.-L., Wei, Y.-Y., Wang, H.-L., Huang, Y., Xu, J., Liu, Y., Guo, G., Niu, X.-J., Gong, Y.-B., Park, G.-S. "An Open Rectangular Waveguide Grating for Millimeter-Wave Traveling-Wave Tubes", Chinese Physics Letters 33 (9) 090701

  

Liao, M.-L., Wei, Y.-Y., Wang, H.-L., Xu, J., Liu, Y., Guo, G., Niu, X.-J., Gong, Y.-B., Park, G.-S. "Design of a Novel Folded Waveguide for 60-GHz Traveling-Wave Tubes", Chinese Physics Letters 33 (4) 044201

 

Luqi Zhang, Yanyu Wei, Bing Wang, Wenan Shen, Jin Xu, Yubin Gong, and Gun-Sik Park, "Investigation of 0.38 THz backward-wave oscillator based on slotted sine waveguide and pencil electron beam", Physics of Plasmas 23, 033111

 

R. K. Barik, A. K. Singh, S. Shukla, T. P. Singh, R. S. Raju, Park, G.-S. "Development of nanoparticle-based high current density cathode for THz devices application", IEEE Transactions on Electron Devices 63 (4), 7415986, pp. 1715-1721 

 

Lee, K., Jeong, J., Bahk, Y.-M., Rhie, J., Baek, I.-K., Lee, B.J., Kang, Y.H., Hong, S., Park, G.-S., Kim, D.-S. "Microwave Funneling through Sub-10 nm Nanogaps", ACS Photonics 3 (4), pp. 537-542
  

 

2015


Yoon, J.-H., Yang, Y.-J., Park, J., Son, H. Park, H., Park, G.-S., Ahn, C.-B. "Stiffness measurement using terahertz and acoustic waves for biological samples", Optics Express 23(25) pp. 32671-32678

 

Son, H., Choi, D.-H., Jung, S., Park, J., Park, G.-S. "Dielectric relaxation of hydration water in the Dickerson-Drew duplex solution probed by THz spectroscopy", Chemical Physics Letters 627, pp. 134-139
 

Sattorov, M., Khutoryan, E., Lukin, K., So, J., Park, G.-S. "Automodulation processes in clinotrons with low-focusing magnetic field", IEEE Transactions on Electron Devices 62 (5), 7059232, pp. 1617-1621 

 

Khutoryan, E., Sattorov, M., Lukin, K. A., So, J., Park, G. "Theory of Multimode Resonant Backward-Wave Oscillator With an Inclined Electron Beam", IEEE Transactions on Electron Devices 62 (5), 7064744, pp. 1628-1634 

 

Liao, M., Wei, Y., Wang, H., (...), Wang, W., Park, G.-S. "A Novel Folded Waveguide for V-Band TWT", IEEE Transactions on Plasma Science 43 (12), 7308075, pp. 4088-4091
   

 

2014


Lee, J.S., Kim, T., Kim, S.-G., Kang, T.J., Kim, Y.H. "High performance CNT point emitter with graphene interfacial layer", Nanotechnology 25 (45), 455601 

 

Bera, A., Barik, R.K., Sattorov, M., So, J.-K., Park, G.-S. "Surface-coupling of Cerenkov radiation from a modified metallic metamaterial slab via Brillouin-band folding", Optics Express 22 (3), pp. 3039-3044 

 

Jo, S.J., Yoon, S.-Y., Lee, J.Y., Park, W.-Y., Kwon, O. "Biological effects of femtosecond-terahertz pulses on C57BL/6 mouse skin", Annals of Dermatology 26 (1), pp. 129-132 

 

Kwon, O., Sattorov, M.A., Min, S.-H., Won, J.-H., Park, G.-S. "Efficient terahertz oscillation using a half-period staggered grating resonator", Japanese Journal of Applied Physics 53 (6), 066201 

 

 

2013


MacPherson, E., Gallerano, G.P., Park, G.-S., Hintzsche, H., Wilmink, G.J. "Guest editorial: Terahertz imaging and spectroscopy for biology and biomedicine", IEEE Journal of Biomedical and Health Informatics 17 (4), pp. 765-767 

 

Kim, K.-T., Park, J., Jo, S.J., Park, W.-Y., Park, G.-S. "High-power femtosecond-terahertz pulse induces a wound response in mouse skin",  Scientific Reports 3, 2296

 

Macpherson, E., Gallerano, G.P., Park, G.-S., Hintzsche, H., Joseph Wilmink, G.J. "Guest editorial: Terahertz imaging and spectroscopy for biology and biomedicine", IEEE Transactions on Terahertz Science and Technology 3 (4), 6557487, pp. 354-356

 

He, J., Wei, Y., Park, G. "Nonlinear investigation of beam-wave interaction in double-groove loaded folded-waveguide traveling-wave tube",  Science China: Physics, Mechanics and Astronomy 56 (7), pp. 1366-1372 

 

Barik, R.K., Bera, A., Raju, R.S., Lee, K.W., Park, G.-S. "Development of alloy-film coated dispenser cathode for terahertz

vacuum electron devices application", Applied Surface Science 276, pp. 817-822   

 

Barik, R.K., Bera, A., Tanwar, A.K., Lee, W.S., Park, G.-S. "A novel approach to synthesis of scandia-doped tungsten nano-particles for high-current-density cathode applications", International Journal of Refractory Metals and Hard Materials 38, pp. 60-66 

 

Sattorov, M., Khutoryan, E., Lukin, K., Kwon, O., Park, G.-S. "Improved efficiency of backward-wave oscillator with an inclined electron beam",  IEEE Transactions on Electron Devices 60 (1), 6373718, pp. 458-463

 

 

2012


Choi, D.-H., Son, H., Jung, S., Kwon, O.S., Park, G.-S. "Dielectric relaxation change of water upon phase transition of a lipid bilayer probed by terahertz time domain spectroscopy", Journal of Chemical Physics 137 (17), 175101   

 

Jang, K.-H., Park, S.H., Lee, K., Park, G.-S., Jeong, Y.U. "High-order photonic bandgap reflex klystron using carbon nanotube multi-beam cathode", Electronics Letters 48 (12), pp. 707-708   

 

Lee, E.S., So, J.-K., Park, G.-S., Kee, C.-S., Jeon, T.-I. "Terahertz band gaps induced by metal grooves inside parallel-plate waveguides", Optics Express 20 (6), pp. 6116-6123

 

Guo, G., Wei, Y., Yue, L., Wang, W., Park, G.-S. "A tapered ridge-loaded folded waveguide slow-wave structure for millimeter-wave traveling-wave tube", Journal of Infrared, Millimeter, and Terahertz Waves 33 (2), pp. 131-140  

 

 

2011


Kim, G., Park, J.W., Kim, I.G., (...), Kim, D.-W., Cho, M.H. "Low-voltage high-performance silicon photonic devices and photonic integrated circuits operating up to 30 Gb/s", Optics Express 19 (27), pp. 26936-26947 

 

Yoon, S.-Y., Kim, K.-T., Jo, S.J., Kwon, O.S., Park, W.-Y. "Induction of hair growth by insulin-like growth factor-1 in 1,763 MHz radiofrequency-irradiated hair follicle cells",  PLoS ONE, 6 (12), e28474

 

He, J., Wei, Y., Gong, Y., Wang, W., Park, G.-S. ”Investigation on a W band ridge-loaded folded waveguide TWT”, IEEE Transactions on Plasma Science, 39 (8), 5951789, pp. 1660-1664

 

Booske, J.H., Dobbs, R.J., Joye, C.D., (...), Park, J., Temkin, R.J. "Vacuum electronic high power terahertz sources", IEEE Transactions on Terahertz Science and Technology 1 (1), 5993476, pp. 54-75 

 

So, J. K., K. H. Jang, et al. (2011). "Bulk and surface electromagnetic response of metallic metamaterials to convection electrons." Applied Physics Letters 99(7).

 

Matlabjon Abdurakhimovich Sattorov, Anirban Bera, Ashok Sharma, Won-Jong Kang, Oh-Joon Kwon, Sun-Shin Jung, Dae-Ho Kim, Ki Wook Lee, Jong-Hyo Won, Chan Ho Kook and Gun-Sik Park, "Thermal Analysis of Strapped Magnetron", IEEE Trans on Electron Devices (accepted for publication, 2011)

 

 

2010


Wang ZL, Gong YB, Wei YY, Duan ZY, Gong HR, Lu ZG, Yue LN, Yin HR, Xu J, Li YB, Liu PK, Park GS, "Stable Sheet-Beam Transport in Periodic Nonsymmetric Quadrupole Field", IEEE TRANSACTIONS ON PLASMA SCIENCE,  VOL. 38, NO. 1, JAN (2010)

 

H. C. Jung, S. H. Min, G. S. Park, J. An, S. H. Lee, Y. J. Yoon, J. Y. Kim, J. H. Choi, J. H. So, and M. Petelin "Transmission of gigawatt-level microwave using a beam-rotating mode converter in a relativistic backward wave oscillator" Appl. Phys. Lett. Vol.96, No.131502, March (2010)

 

Liao ML, Wei YY, He J, Gong YB, Wang WX, Park GS, "Large-Signal Simulations of a Novel Folded Waveguide Traveling-Wave Tube", CHINESE JOURNAL OF ELECTRONICS, VOL. 19, NO. 2, APR (2010)

 

Wang ZL, Gong YB, Wei YY, Duan ZY, Gong HR, Yue LN, Yin HR, Lu ZG, Xu J, Chen BR, Liu PK, Park GS, "The Conditions for Stable Sheet Electron Beams Transport in Periodic Permanent Magnet Fields", JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, VOL. 31, NO. 6, JUN (2010)

 

Sun-Hong Min, Hoe-Chun Jung, Gun-Sik Park, Jihwan Ahn, Sang Heun Lee, Young Joong Yoon, Junyeon Kim, Jun-Ho Choi, and Joonho So, “Mode Conversion of High-Power Electromagnetic Microwave Using Coaxial-Beam Rotating Antenna in Relativistic Backward-Wave Oscillator”, IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 38, NO. 6, June (2010)

 

Liao ML, Wei YY, Gong YB, He J, Wang WX, Park GS, "A Rectangular Groove-Loade Folded Waveguide for Millimeter-Wave Traveling-Wave Tubes", IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 38, NO. 7, JUL (2010) 

 

Jin-Kyu So, Hoe-Cheon Jung, Sun-Hong Min, Kyu-Ha Jang, Seung-Ho Bak, and Gun-Sik Park, "Enhanced transmission of electromagnetic waves through 1D plasmonic crystals", OPTICS EXPRESS, Vol. 18, No. 19, 13 September (2010)

 

Jin-Kyu So, Jong-Hyo Won, M. A. Sattorov, Seung-Ho Bak, Kyu-Ha Jang, Gun-Sik Park, D. S. Kim, and F. J. Garcia-Vidal. "Cerenkov radiation in metallic metamaterials". Appl. Phys. Lett. Vol.97, No.151107, October (2010)

 

 

2009


Anurag Srivastava, Jin-Kyu So, Yiman Wang, Jinshu Wang, R.S. Raju, Seong-Tae Han, and Gun-Sik Park,“Design of Sheet-Beam Electron Gun with Planar Cathode for Terahertz Devices”, Journal of Infrared, Vol. 30, No. 7, pp. 670-678, July (2009)

 

Lili Li, Yiman Wang, Wei Liu, Yanchun Wang, Jinshu Wang, Anurag Srivastava, Jin-Kyu So, and Gun-Sik Park,“Development of High-Current Sheet Beam Cathodes for Terahertz Sources”, IEEE TRANSACTIONS ON ELECTRON DEVICES, Vol. 56, No. 5, pp 762-768, May (2009)

 

M. A. Seo, H. R. Park, S. M. Koo, D. J. Park, J. H. Kang, O. K. Suwal, S. S. Choi, P. C. M. Planken, G. S. Park, N. K. Park, Q. H. Park, and D. S. Kim, “Terahertz field enhancement by a metallic nano slit operating beyond the skin-depth limit”, Nature Photonics Vol. 3, No. 152 March 2009

 

Young-Do Joo, Gun-Sik Park, Dae-Ho Kim, Jung-Il Kim, Seok-Gy Jeon, Seong-Tae Han, Sun-Shin Jung, Jong-Uk Kim, “Design of a Third-Harmonic Gyrotron Oscillator Using a Photonic Crystal Cavity”, japanese journal of applied physics Vol. 48, No. 7, pp. 074502-1~074502-5, June (2009)

 

 

2008


Wenxin Liu, Ziqiang Yang, Zheng Liang, Dazhi Li, Kazuo Imasaki, Zongjun Shi, Feng Lan, Gun-Sik Park, and Shenggang Liu, “Enhancements of Terahertz Radiation From a Grating Waveguide by Two-Stream Instability”, IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 36, NO. 3, pp 748-756, June (2008)

 

Kyu-Ha Jang, Seok-Gy Jeon, Jung-Il Kim, Jong-Hyo Won, Jin-Kyu So, Seung-Ho Bak, Anurag Srivastava, Sun-Shin Jung, and Gun-Sik Park, "High order mode oscillation in a terahertz photonic-band-gap multibeam reflex klystron", Appl. Phys. Lett., Vol. 93, No. 211104, 25 November 2008

 

 

2007


Young-Min Shin, Jin-Kyu So, Kyu-Ha Jang, Jong-Hyo Won, Jung-Il Kim, Anurag Srivastava, and Gun-Sik Park, "Superradiant Terahertz Smith-Purcell Radiation from Surface-Plasmon Excited by Counter-Streaming Electron Beams", Appl. Phys. Lett., Vol. 90, No. 031502, Jan. (2007)

 

S. G. Jeon, Y. M. Shin, K. H. Jang, S. T. Han, J. K. So and G. S. Park, "High Order Mode Formation of Externally Coupled Hybrid Photonic-Band-Gap (PBG) Cavity", Appl. Phys. Lett., Vol. 90, No. 021112, January. (2007)

 

D. H. Kim,H. C. Jung, S. H. Min, S. H. Shin, and G. S. Park,"Dynamics of Mode Competition in a Gigawatt-class Magnetically Insulated Line Oscillator" ,Appl. Phys. Lett., Vol 90, 124103, Feb.2007

 

Young-Min Shin, Jin-Kyu, So, Jong-Hyo Won, Sang-Hoon Kim, and Gun-Sik Park, "Frequency-Dependent Refractive Index of One-Dimensionally Structured Thick Metal Film," Appl. Phys. Lett., Vol. 91, No. 031102, July. (2007)

 

Dazhi Li, Kazuo Imasaki Ziqiang Yang, Gin-Sik Park, Shiji Miyamoto, Sho Amano , and Takayasu Mochizuki, "Smith-Purcell Radiation with Three-Dimensional Simulation", Japanese Journal of Applied Physics, Vol. 46, No. 2, pp 601-604, February. (2007)

 

Wenxin Liu, Ziqiang Yang, Zheng Liang, D. Li, K. Imasaki, Zongjun Shi, Feng Lan, Gun-Sik Park, "Enhancement of terahertz Smith-Purcell radiation by two electron beams", Nuclear Instruments and Methods in Physics Research A, Vol. 580, pp 1552-1558, August. (2007)

 

Chan-Wook Baik, Jeonghee Lee, Deuk Seok Chung, Seong Chan Jun, Jun Hee Choi, Byung Kwon Song,Min Jong Bae, Tae Won Jeong, Jung Na Heo, Yong Wan Jin, Jong-Min Kim, Member, IEEE, SeGi Yu, Kyu-Ha Jang, and Gun-Sik Park, Member, IEEE , "Improvement of Field-Emission Characteristics of Carbon Nanotubes by Post Electrical Treatment", IEEE Trans. Electron. Dev., Vol. 54, No. 9, pp 2392-2402 September. (2007)

 

N. M. Ryskin, S. T. Han, K. H. Jang, and G. S. Park, "Theory of the microelectronic traveling wave klystron amplifier with field-emission cathode array", Physics of Plasmas, Vol. 14, No. 9, pp093106, September. (2007)

 

Young-Min Shin, Jin-Kyu So, Kyu-Ha Jang, Jong-Hyo Won, Anurag Srivastava, and Gun-Sik Park,"Evanescent Tunneling of an Effective Surface Plasmon Excited by Convection Electrons", Phys. Rev. Lett., Vol 99, pp 147402, October. (2007)

 

Yanyu Wei, Hongtao Liu, Jun He, Yubin Gong, Lingna Yue, Wenxiang Wang, Gun-Sik Park, "The small signal analysis of a centered dielectric-rod loaded, arbitrarily-shaped helical groove", Int J Infrared Milli Waves, Vol.28, pp.1051-1062, September. (2007)

 

D. Li, K. Imasaki, X. Gao and Z. Yang, Gun-Sik Park, "Reduce the start current of Smith-Purcell backward wave oscillator by sidewall grating", Appl. Phys. Lett., Vol. 91, No. 221506, November. (2007)

 

Chan-Wook Baik, Jeonghee Lee, Deuk Seok Chung, Jun hee Choi, In-Taek Han, Ha Jin Kim, Shang Hyeun Park, Sun Il kim, Yong Wan Jin, Jonh-Min Kim, Member, IEEE, Jin Young Kim, SeGi Yu, Kyu-Ha Jang, and Gun-sik Park, Member, IEEE, "Controlled Vacuum Breakdown in Carbon Nanotube Field Emission", IEEE Trans. Nanotechnology, Vol. 6, No. 6, pp 727-733, November. (2007)

 

 

2006


Y. M. Shin, J. H. Won, S. T. Han, N. M. Ryskin, and G. S. Park, "Theoretical Analysis of cross-talking signals between counter-streaming electron beams in a vacuum tube oscillator", Phys. Plas., Vol. 13, No. 3, 2006

 

J. I. Kim, J. H. Won, H. J. Ha, J. C. Shon and G. S. Park, "Reduction of noise in strapped magnetron by electric priming using anode shape modification", Appl. Phys. Lett., Vol.88, No. 22, pp2215011-3, Jun. 2006

 

G. Singh, M. V. Kartikeyan, and G. S. Park, “GAIN AND BANDWIDTH ANALYSIS OF A VANE-LOADED GYRO-TWT”, International Journal of Infrared and Millimeter Waves, vol. 27, no. 3, pp. 333-341, March 2006.

 

Y. M. Shin, J. K. So, J. H. Kim, S. T. Han, K. H. Jang, S. S. Chang, and G. S. Park, “Microwavefabrication of Millimeter Wave Vacuum Electron Devices by Two-Step Deep Etch X-Ray Lithography", Appl. Phys. Lett., Vol. 88, No. 9, Feb. 2006

 

D.Li, K.lmasaki, Z.Yang, and Gun-sik Park, "Three-dimensional simulation of super-radiant Smith-Purcell radiation" Appl. Phys. Lett., Vol.88, No. 201501, May. 2006

 

G. S. Park, Y. M. Shin, J. K. So, S. T. Han, K. H. Jang, J. H. Kim, and S. S. Chang , "Feasibility Study of Two-Step LIGA-Fabricated Circuits Applicable to Millimeter/Submillimeter Wave Sources", AIP Conf. Proc. 807, 299 (2006)

 

D. Li, Z. Yang, K. Imasaki, and Gun-Sik Park, "Particle-in-cell simulation of coherent and superradiant Smith-Purcell radiation", Physical Review Special Topics, vol. 9, PP. 040701, April. (2006)

 

D. Li, K. Imasaki, Z. Yang, Gun-Sik Park, S. Miyamoto, S. Amano, T. Mochizuki, "Effect of grating surface loss on the Smith-Purcell free-electron laser", Nuclear Instruments and Methods in Physics Research A, Vol. 572, pp 948-952, December. (2006)

 

 

2005


J. I. Kim, J. H. Won and G. S. Park, "Electron pre-bunching in microwave magnetron by electric priming achieved with anode shape modification", Appl. Phys. Lett., Vol 86, No 14, pp171501-171503, April 2005

 

C. W. Baik, S. G. Jeon, D. H. Kim, N. Sato, K. Yokoo, and G. S. Park, ``Third-Harmonic Frequency Multiplication of a Two-Stage Tapered Gyrotron Traveling-Wave Tube Amplifier,'' IEEE Trans. Electron Dev., vol. 52, no. 5, pp829-837, May 2005.

 

S.T. Han, S.G. Jeon, Y.M. Shin, K.H. Jang, J.K. So, J.H. Kim, S.S. Chang, and G.S. Park, "Experimental Investigations on Miniaturized High Frequency Vacuum Electron Devices", IEEE Trans. Plasma Sci., Vol. 33, No. 2, pp679-684, Apr. 2005

 

S.T. Han, J.K. So, K.H. Jang, Y.M. Shin, J.H. Kim, S.S. Chang, N.M. Ryskin, and G.S. Park, "Investigations on a Micro-Fabricated Folded Waveguide Traveling-Wave Tube Oscillator", IEEE Trans. Electron Dev., vol. 52, no. 5, pp702-708, May 2005.

 

S.T. Han, K.H. Jang, J.K. So, N.M. Ryskin, and G.S. Park, "Enhancement of backward-wave interaction by external feedback" Phys. Plasmas, vol. 12, no. 8, pp.83103-83108, Aug. 2005.

 

 

2004


S. G. Jeon, C. W. Baik, D. H. Kim, G. S. Park, N. Sato, and K. Yokoo, ``Experimental verification of low velocity spread axis-encircling electron beam,'' Appl. Phys. Lett. Vol. 84, No. 11, pp. 1994-1996, Mar. 2004

 

S.T. Han, K.H. Jang, J.K. So, J.I Kim, Y.M. Shin, N.M. Ryskin, S.S. Chang, G.S. Park, "Low-Voltage Operation of Ka-Band Folded Waveguide Traveling-Wave Tube", IEEE Transactions on Plasma Sci., Vol. 32, No. 1, pp. 60-66, Feb. 2004

 

N. M. Ryskin, V. N. Titov, S. T. Han, J. K. So, K. H. Jang, Y. B. Kang, and G. S. Park, "Non-stationary behavior in a delayed feedback traveling wave folded waveguide oscillator", Phys. Plasmas, vol. 11 no. 3, pp. 1194-1202, Mar. 2004

 

J.I. Kim, D.W. Kim, In.K. Yoo, Y.Y. Wei, G.S. Park, "Relativistic Focus Condition for E-beam projection Lithography", Japanese Journal of Applied Physics, Vol. 43, No. 12. pp. 8044-8047, Dec 2004

 

J.I. Kim, J.H.Won, H.J. Ha, J.C. Shon, G. S. Park, "Three-Dimensional Particle-In-Cell Simulation of 10-Vane Strapped Magnetron Oscillator" IEEE Trans. Plasma Sci. , Vol. 32, No. 5, pp. 2099-2104, Oct 2004

 

 

2003


C.W. Baik, S.G. Jeon, G.S. Park, "Ballistic Bunching Theory of Electron Cyclotron Resonance Masers", J. Korean Phys. Soc., Vol. 43, No. 6, pp. 1112-1119, Dec. 2003

 

Y.D. Joo, A.K. Sinha and G.S. Park, "Electromagnetic Wave Propagation through an Azimuthally Asymmetric Helix Slow Wave Structure", Japanese Journal of Applied Physics, Vol. 42, No. 12, pp. 7585-7593, Aug. 2003

 

Y.D. Joo, A.K. Sinha, Y.Y. Wei and G.S. Park, "Simplified Approach to the Nonlinear Analysis in Helix Slow-Wave-Structure for a Traveling Wave Tube", Japanese J. of Appl. Phys., Vol. 42, No. 11, pp. 7104-7111, Oct. 2003

 

S.T. Han, J.I. Kim and G.S. Park, "Design of Folded Waveguide Traveling-Wave Tube", Microwave and Opt. Technol. Lett. , Vol. 30, No. 2, pp. 161-165, July 2003.

 

Y.M. Shin, G.S. Park, G.P. Scheitrum, "Novel coupled-cavity TWT structure using two-step LIGA fabrication", IEEE. Transactions on Plasma Sci., Vol. 31, No. 6, pp. 1317-1324, Dec. 2003

 

Yanyu Wei, Wenxiang Wang, Baofu Jia, Jiahong Sun, A.K. Sinha, Sheng-Gang Liu and G.S. Park, "Experimental Demonstration of the Effect of Groove Shape on the Wave Properties of the Helical Groove Waveguide", IEEE Trans. Microwave and Wireless Components Lett., Vol. 13, No. 11, pp. 484-486, Nov. 2003

 

 

2002


S. S. Jung, A. V. Soukhov, and G. S. Park, "Comparison of 2-D PIC Simulation with 1-D Nonlinear Theory in Helix Traveling-Wave Tube", Microwave and Opt. Technol. Lett., Vol. 34, No. 6, pp.451-454, Sep. 2002

 

S.G. Jeon, C.W. Baik, D.H. Kim and G.S. Park, N.Sato and K. Yokoo "Analysis of Axi s-Encircling Electron Beam Using a Single-Cusp Magnetic Field", Japanese Journal of Appl ied Physics, Vol.41, Part 1, No. 8, pp. 5404-5407, Aug. 2002

 

S.S. Jung, A.V. Soukhov, G.S. Park and B.N. Basu "Efficiency Enhancement and Harmon ic Reduction of Wideband Helix Traveling-Wave Tube with a Positive Phase-Velocity-Taperin g" Japanese Journal of Applied Physics, Vol. 41, No. 6A, pp. 4007-4013, June 2002

 

H.S. Uhm, H.S. Kim and G.S. Park "Dispersion Relation of the Electromagnetic Waves Propagating Through a Helix Inserted into a Magnetron-type Conducting Cylinder" IEEE Trans. on Plasma Sci. Vol. 30, No. 3, Jun. 2002

 

S.S. Jung, A.V. Soukhov and G.S. Park, " Comparison of 2-D PIC Simulation with 1-D No nlinear Theory in Helix Traveling-Wave Tube " , Microwave and Optical Technology Letters, V ol. 34, No. 6, pp. 451-454, September 2002

 

S.G. Jeon, C.W. Baik, D.H. Kim and G.S. Park, N. Sato and K. Yokoo , " Study on Velocity Spread for Axis-Encircling Electron Beams Generated by Single Magnetic Cusp " , Applied Physics Letters, Vol. 80, No. 20, pp3703~3705, May 2002

 

A.V. Soukhov, Sun-Shin Jung, Gun-Sik Park, "Reflection Suppressing Technique for Nonresonant Microwave Probing", Microwave and Opt. Technol. Lett., Vel.32,No.4,pp287-289, Feb. 2002

 

Wei Yanyu, Wang Wenxiang, Jiahong Sun, Shenggamg Liu, Baofu Jia, Gun-Sik Park "Dielectric Effect on the RF Characteristics of a Helical Groove Traveling Wave Tube" Chinese Physics Soc. , Vol 11, No. 3, pp 277~281, March 2002.

 

S. S. Jung, A. V. Soukhov, and G. S. Park, "Effect of Conductive Perturber Diameter on Nonresonant Measurement of Interaction Impedance for Helical Slow-Wave Structure," IEEE Trans. on Microwave Theory and Techniques, Vol. 50, No. 9, pp. 2196-2198, Sep., 2002

 

S. S. Jung, C.W. Baik, S.T. Han, S.G. jeon, A. V. Soukhov, Baofu Jia, G. S. Park, H.S. Uhm, H.J. Ha and B.N. Basu "Wideband Semi-Vane and Heavily Dielectric Loaded Helix Traveling-Wave Tubes", IEEE Trans. on Plasma Sci., Vol. 30, No. 3, pp.1009-1016, June 2002

 

S. S. Jung, A. V. Soukhov, Baofu Jia and G. S. Park, "Positive Phase-Velocity-Tapering of Broadband Helix TWTs for Efficiency Enhancement", Applied Physics Letters, Vol. 80, No. 16, pp. 3000~3002, Apr. 2002

 

Yanyu Wei, Baofu Jia*, Gun-Sik Park, Young-Do Joo, Guofen Yu, Wenxiang Wang, Shenggang Liu, and Han S. Uhm, " Theory of High-Power Wideband Traveling-Wave Tube Using Coaxial Inverted Helical Groove Slow-Wave Structure " IEEE Transactions on Plasma Sci., Vol. 30, No. 5, pp. 2010-2018, Oct. 2002

 

A. G. Rozhnev, N. M. Ryskin, D. V. Sokolov and D. I. Trubetskov (SSU), S. T. Han, J. I. Kim and G. S. Park (SNU) " Novel Concepts of Vacuum Microelectronic Microwave Devices with Field Emitter Cathode Arrays " Physics of Plasma, Vol. 9, No. 9, pp. 4020-4027, September 2002

 

S. S. Jung, Y. D. Joo, S. Ghosh, B. N. Basu, and G. S. Park, "Synthesis of Dielectric Helix-Supports for Wideband Helix Traveling-Wave Tubes," Microwave and Opt. Technol. Lett., Vol. 32, No. 3, pp231-235, Feb. 2002

 

 

2001


H.S. Uhm and H. S. Kim. G.S. Park "Influence of beam head effects on high-power klystr on amplifier", J. Appl. Phys. Vol. 89, No. 8 pp 4224~4230 , 2001

 

 

1999


H. J. Ha, S. S. Jung, and G. S. Park, "Experimental Investigation of Ku-band Folded Wave guide TWT", Int. J of Infrared and Millimeter Waves, Vol. 20, No 12, December 1999

 

 

1998


J. G. Jin, G. S. Park, and H. S. Uhm, "Propagation Characteristics of a Premodulated Ele ctron Beam", IEEE Trans. on Plasma Science, Vol. 26, No. 3, 794-798 (1998)

 

H. J. Ha, S. S. Jung, and G. S. Park, "Linear Theory of a Folded Waveguide Traveling-Wa ve Tube (TWT)", J. Korean Physical Society, Vol. 34, No. 3, 297-300 (1998)

 

H. J. Ha, S. S. Jung, and G. S. Park, "Theoretical Study for Folded Waveguide Traveling Wave Tube", Int. J. Infrared and Millimeter Waves, vol. 19, no. 9 (1998 )

 

J. G. Jin, G. S. Park, "Propagation Characteristics of a Premodulated Electron Beam", J. Vacuum Science and Technology B, 15(2), 754-757 (1998)

 

 

1997


M. C. Wang, G. S. Park, and J. K. Lee, "A Compact Free Electron Laser Investigation", I nt. J. Infrared and Millimeter Waves, vol 18, no. 4 (1997)

 

M. C. Wang, and G. S. Park, "An Improvement of High Voltage Power Supply for Pseudo spark Discharge", Int. J. Infrared and Millimeter Waves, vol 18, no. 6 (1997)

 

 

1996


K. T. Nguyen, G. S. Park, J. J. Choi, S. Y. Park, and R. K. Parker , "Effects of Beam Velocity Spread on Two-Stage Tapered Gyro-TWT Amplifier" IEEE Trans. Electron Devices, Vol. 43, No. 4, (1996)

 

J. J. Choi, C. M. Armstrong, F. Calise, A. K. Ganguly, R. H. Kyser, G. S. Park, R. K. Park er, and F. Wood, "Experimental Observation of Coherent Millimeter Wave Radiation in a Folded Waveguide Employed with a Gyrating Electron Beam, Phys. Rev. Letters, vol 76, no 22, 4273-42 76 (1996)

 

 

1995


G. S. Park, J. J. Choi, S. Y. Park, C. M. Armstrong, A. K. Ganguly, R. H. Kyser, and R. K. Parker, "Gain Broadening of Two-Stage Tapered Gyro-TWT Amplifier" Phys.Rev. Letters Vo l 74, 2399-2402(1995)

 

J. J. Choi and G. S. Park, "Coupled Cavity Gyrotron Traveling-Wave-Tube Amplifier" IEEE Trans. Electron Devices, 23, 495 (1995)

 

G. S. Park, C. M. Armstrong, R. H. Kyser anf J. L. Hirshfield, "Linealy Polarized TEn1 Coupler" Int. J. Electron, June(1995)

 

P. M. Malouf, V. L. Granatstein, S. Y. Park, G. S. Park, and C. M. Armstrong, "Performance of a Wideband Three-stage, Mixed Geometry Gyrotwystron Amplifier" IEEE Trans. Electron Devices, 42, No 9

 

 

1994


G. S. Park, S. Y. Park, R. Kyser, C. M. Armstrong, A. K. Ganguly, and R. K. Parker, "Broadband Operation of a Ka-Band Tapered Gyro Traveling Wave Amplifier" IEEE Trans. Plasma Science Vol 22, 536-543(1994)

 

A. K. Ganguly, G. S. Park, and C. M. Armstrong "Nonlinear Theory of Harmonic Peniotron and Gyrotron Interaction In a Rising-Sun Slotted Waveguide" IEEE Trans. Plasma Science Vo l 22, 902-912(1994)

 

 

1993


H. S. Uhm, G. S. Park, C. M. Armstrong, "A Theory of Cavity Excitation by Modulated Electron Beam in Connection with Application to Klystron Amplifier" Phys. Fluids B 5 (4), 1349-135 7(1993)

 

A. K. Ganguly, G. S. Park, C. M. Armstrong, "Linear Analysis of Backward Wave Oscillati ons in Azimuthally varying Transverse electric(TE) modes" Phys. Fluids B 5 (5), 1639-1646(1993)

 

G. S. Park, P. Malouf, V. L. Granatstein, C. M. Armstrong and A. K. Ganguly, "Realization of Improved Efficiently In a Gyroklystron Amplifier" Particle Accelarators, Vol 43, 93-105(1993)

 

 

1992


G. S. Park, V. L. Granatstein, S. Y. Park, Armstrong, and A. K. Ganguly, "Experimental Study of Efficiency Optimization in a Three-Cavity Gyroklystron Amplifier" IEEE Trans. Plasma Science Vol 20, No 3, 224-231(1992)

 

G. S. Park, J. L. Hirshfield and C. M. Armstrong, "Passive Gyrotron Cavity Loading and Frequency Shift" Int. J. Electronics Vol 72, No 5 & 6, 921-941(1992)

 

G. S. Park, V. L. Granatstein, J McAdoo, C. M. Armstrong, A. H. McCurdy and S. Y. Par k, "Phase noise reduction in a gyroklystron amplifier" Int. J. Electronics Vol 72 No 5 & 6, 909-920(1992)

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