G
Gun-Sik Park
Researcher at Seoul National University
Publications - 338
Citations - 5762
Gun-Sik Park is an academic researcher from Seoul National University. The author has contributed to research in topics: Terahertz radiation & Amplifier. The author has an hindex of 30, co-authored 337 publications receiving 5149 citations. Previous affiliations of Gun-Sik Park include University of Electronic Science and Technology of China & University of Maryland, College Park.
Papers
More filters
Journal ArticleDOI
Fully sealed, high-brightness carbon-nanotube field-emission display
Wonbong Choi,Deuk-seok Chung,Jihoon Kang,Hyun-Chul Kim,Yong Wan Jin,In Taek Han,Young Hee Lee,Jae Eun Jung,Naesung Lee,Gun-Sik Park,Jong Min Kim +10 more
TL;DR: In this article, a fully sealed field-emission display 4.5 in. in size has been fabricated using single-wall carbon nanotube (CNT)-organic binders.
Journal ArticleDOI
Vacuum Electronic High Power Terahertz Sources
John H. Booske,Richard Dobbs,Colin D. Joye,Carol L. Kory,George R. Neil,Gun-Sik Park,Jaehun Park,Richard J. Temkin +7 more
TL;DR: In this paper, the capabilities for vacuum electronic device (VED) sources of powerful terahertz (THz) and near-THz coherent radiation, both CW or average and pulsed, were evaluated.
Journal ArticleDOI
Terahertz field enhancement by a metallic nano slit operating beyond the skin-depth limit
Minah Seo,Hyeong-Ryeol Park,S. M. Koo,Doo Jae Park,Ji-Hun Kang,O. K. Suwal,S. S. Choi,Paul C. M. Planken,Gun-Sik Park,Namkyoo Park,Q-Han Park,Dai-Sik Kim +11 more
TL;DR: In this article, the effect of a tiny gap in a metal substrate on incident terahertz radiation in the regime where the gap's dimensions are smaller than the metal's skin-depth is investigated.
Journal ArticleDOI
Gain broadening of two-stage tapered gyrotron traveling wave tube amplifier.
TL;DR: The first operation of a two-stage tapered gyrotron traveling wave amplifier employing two tapered waveguide circuits and tapered magnetic fields was reported in this paper, where small-signal gain of 30 dB and saturated gain of 25 dB over a 20% bandwidth at an efficiency of 16% was observed using a 33 kV, 1.5 A electron beam.
Journal ArticleDOI
Superradiant terahertz Smith-Purcell radiation from surface plasmon excited by counterstreaming electron beams
TL;DR: In this paper, evanescent tunneling transmission of effective surface plasmon polaritons between two counterstreaming electron beams noticeably increases Smith-Purcell radiation (SPR) intensity by about two orders of magnitude as well as lower its transition threshold from a spontaneous emission to a stimulated one.