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High power terahertz sources: new applications and challenges

Choi, EunMi

Conference Paper Issue Date2023-05-23 View6

High-Density Plasma Diagnosis Using Quasi-Optical Millimeter-Wave Systems File

Choe, Mun Seok , Sawant, Ashwini , Choi, EunMi

Article Issue Date2020-11 View8

High-Directivity Orbital Angular Momentum Antenna for Millimeter-Wave Wireless Communications File

Lee, Ingeun , Sawant, Ashwini , Choi, EunMi

Article Issue Date2021-07 View12

High-Power Millimeter-Wave Orbital Angular Momentum Mode Identification Using Double Slit Interference File

Moon, SeokJu , Yu, Dongho , Choi, EunMi

Article Issue Date2023-12 View21

High-Precision Complex Permittivity Measurement of High Loss Dielectric Materials Using a Geometrical Gap in Millimeter Wave Frequency File

Choi, Hong Eun , Choi, EunMi

Article Issue Date2024-02 View21

Higher Order Mode (TEmp) Generation at Millimeter-wave and Its Precies Measurement

Choi, Moonseok , Lee, Ingeun , Lee, Dongjun , Choi, EunMi

Conference Paper Issue Date2015-02-25 View13

Higher order mode generation in millimeter wave regime by directly launched fundamental mode File

Choe, Mun Seok , Choi, EunMi

Article Issue Date2014-07 View21

Higher Order Mode Generator by Using Dielectric Rod Waveguide in Millimeter Wave Regime

Han, Tae Gyu , Sawant, Ashwini , Choi, EunMi

Conference Paper Issue Date2021-08-18 View12

Higher Order Mode Generator by using Dielectric Rod Waveguide in Millimeter Wave Regime

Han, Tae Gyu , Sawant, Ashwini , Choi, EunMi

Conference Paper Issue Date2021-02-17 View7

Higher Order Mode Generator Direct-coupled with a Dielectric Rod Waveguide at W-band

Han, Taekyu , Lim, Jinho , Choi, EunMi

Conference Paper Issue Date2022-04-28 View7

Highly-Sensitive Plasmonic Nano-Ring Transistor for Monolithic Terahertz Active Antenna File

Ryu, Min Woo , Patel, Ramesh , Jang, ESan , Ahn, Sang Hyo , Jeon, Hyeong Ju , Choe, Mun Seok , Choi, EunMi , Han, Ki Jin , Kim, Kyung Rok

Conference Paper Issue Date2017-07-26 View8

Imaging of atmospheric air breakdown caused by a high-power 110-GHz pulsed Gaussian beam File

Hidaka, Yoshiteru , Choi, EunMi , Mastovsky, I. , Shapiro, M. A. , Sirigiri, J. R. , Temkin, R. J.

Article Issue Date2008-08 View16

Improved dielectric resonator method using a TE01 mode to determine the dielectric constant at high frequencies

최은미 , 최홍은 , 최원진 , 한태규

Conference Paper Issue Date2018-10-26 View14

Improved dielectric resonator method using a TE01 mode to determine the dielectric constant at high frequency

최홍은 , 최원진 , 최은미

Conference Paper Issue Date2018-08-25 View10

In situ endoscopic observation of higher-order mode conversion in a microwave mode converter based on an electro-optic probe system File File

Lee, Ingeun , Lee, Dong-Joon , Choi, EunMi

Article Issue Date2014-11 View10

Investigation of amplitude non-uniformity in OAM beams generated using transmissive structures

Sawant, Ashwini , Lee, Ingeun , Choi, EunMi

Conference Paper Issue Date2020-08-20 View9

Machine Learning Guided Alignment System for a W-Band Higher Order Mode Generator File

Baijukya, Edrick , Lim, JinHo , Choi, EunMi

Article Issue Date2024-03 View13

Magnetic Focusing System for 300 GHz Sheet Electron Beam Traveling-Wave Tube Using Periodic Permanent Magnet

최원진 , 이인근 , 최은미

Conference Paper Issue Date2018-10-28 View14

Measurement of onset time of plasma breakdown under various low pressurized gaseous states using a high power gyrotron

Kim, Dong Sung , Kim, Sung Gug , Choi, EunMi

Conference Paper Issue Date2015-10-21 View15

Measuring the carrier lifetime by using a quasi-optical millimeter- and THz-wave system File

Choe, Mun Seok , Sawant, Ashwini , Lee, Kyu-Sup , Yu, Nan Ei , Choi, EunMi

Article Issue Date2017-02 View23

Megawatt power level 120 GHz gyrotrons for ITER start-up File

Choi, EunMi , Marchewka, C. , Mastovsky, I. , Shapiro, M.A. , Sirigiri, J.R. , Temkin, R.J.

Article Issue Date2005-01 View7

Metasurface based Orbital Angular Momentum Multiplexing and Demultiplexing at E-band frequency

Chung, Hyeongju , Kim, Daeik , Choi, EunMi , Lee, Jongwon

Conference Paper Issue Date2022-05-20 View9

Microscopic Analyses of Electrical Conductivity of Micromachined-Folded Waveguides Based on Surface Roughness Measurement for Terahertz Vacuum Electron Devices File

Lee, Ingeun , Choi, Wonjin , Shin, Jinwoo , Choi, EunMi

Article Issue Date2018-11 View13

Millimeter-wave Higher Order Modes (HOM) and Orbital Angular Momentum (OAM)

Choi, EunMi

Conference Paper Issue Date2023-08-27 View11

Monolithic Circular Transistor-Antenna Design for High-Performance Plasmonic Millimeter-Wave Detectors File

Patel, Ramesh , Ryu, Min Woo , Choe, Mun Seok , Choi, EunMi , Kim, Kyung Rok , Han, Ki Jin

Article Issue Date2020-04 View13

n-situ Measurement of a Higher Order Mode Conversion at Millimeter-wave Range

Lee, Ingeun , Choi, Moonseok , Lee, Dongjun , Choi, EunMi

Conference Paper Issue Date2015-04-10 View11

Nano-CNC fabricating Y-band folded waveguide backward wave oscillator File

Lee, Ingeun , Shin, Jinwoo , Choi, EunMi

Conference Paper Issue Date2017-04-24 View21

Nano-CNC machining of a Folded-Waveguide Slow-Wave Structure for sub-THz Traveling-Wave Tube

이인근 , 최원진 , 신진우 , 최은미

Conference Paper Issue Date2017-08-24 View10

Nano-CNC machining of sub-THz vacuum electron devices File

Gamzina, Diana , Himes, Logan G. , Barchfeld, Robert , Zheng, Yuan , Popovic, Branko K. , Paoloni, Claudio , Choi, EunMi , Luhmann, Neville C.

Article Issue Date2016-10 View27

Near-Field Pattern of Large Aperture Higher Order Mode Generator Using Backpropagated Fields in Free Space File

Kim, Kwanghoon , Choe, Mun Seok , Lee, Woosang , So, Joonho , Choi, EunMi

Article Issue Date2014-04 View8

New observations in resonances and polarizations of a multi-layered metamaterial

Kim, SG , Kim, KH , Cho, H , Choi, Eun Mi

Conference Paper Issue Date2011-04-13 View11

Numerical estimation on free electrons generated by shielded radioactive materials under various gaseous environments File File

Kim, D. S. , Lee, W. S. , So, J. H. , Choi, EunMi

Article Issue Date2013-06 View19

Observation and Study of Low-Frequency Oscillations in a 1.5-MW 110-GHz Gyrotron File

Cerfon, Antoine J. , Choi, EunMi , Marchewka, Chad D. , Mastovsky, Ivan , Shapiro, Michael A. , Sirigiri, Jagadishwar R. , Temkin, Richard J.

Article Issue Date2009-07 View7

Observation of large arrays of plasma filaments in air breakdown by 1.5-MW 110-GHz gyrotron pulses File

Hidaka, Yoshiteru , Choi, EunMi , Mastovsky, I. , Shapiro, M. A. , Sirigiri, J. R. , Temkin, R. J.

Article Issue Date2008-01 View10

Observation of Pulse Shortening Based on Plasma Discharge Phenomenon in W-band Gyrotron

Kim, Dongsung , Yu, Dongho , Sawant, Ashwini , Choi, EunMi

Conference Paper Issue Date2016-10-19 View11

Observation of trapped-modes excited in double-layered symmetric electric ring resonators File

Seo, Bo-jeong , Kim, Kwanghoon , Kim, Sung Gug , Kim, Areun , Cho, HyungJoon , Choi, EunMi

Article Issue Date2012-06 View14

Orbital angular momentum (OAM) multiplexing for a wireless backhaul communication system: Ultimate capacity analysis of OAM channels File

Sawant, Ashwini , Lee, Ingeun , Choi, EunMi

Conference Paper Issue Date2020-05-25 View8

Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers File File

Sawant, Ashwini , Choe, Mun Seok , Thumm, Manfred , Choi, EunMi

Article Issue Date2017-06 View11

Orbital angular momentum of gyrotron modes File

Sawant, Ashwini , Choe, Mun Seok , Thumm, Manfred , Choi, EunMi

Conference Paper Issue Date2017-08-27 View8

Overview of the KoRIA Facility for Rare Isotope Beams File

Ahn, Jung Keun , Bak, Sang In , Blumenfeld, Yorick , Chai, Jong-Seo , Cheon, Byung-Gu , Cheoun, Myung-Ki , Cho, Donghyun , Cho, Yong Sub , Choi, Bong Hyuk , Choi, Chang Ill , et al

Article Issue Date2013-03 View13

Performance Evaluation of a Diode-Type Carbon Nanotube Field Emitter with Inverse T-Type Cathode Configuration

V, Venkatareddy , Choi, Wonjin , Choi, EunMi

Conference Paper Issue Date2023-08-25 View7

Phase retrieval of a high power gyrotron vortex beam

Sawant, Ashwini , Choe, Mun Seok , Choi, EunMi

Conference Paper Issue Date2016-12-16 View6

Phase Retrieval of High-Power Gyrotron Orbital Angular Momentum Beams File

Sawant, Ashwini , Yu, Dongho , Kim, Dongsung , Choe, Munseok , Choi, EunMi

Conference Paper Issue Date2017-04-24 View4

Plasma structures observed in gas breakdown using a 1.5 MW, 110 GHz pulsed gyrotron File

Hidaka, Yoshiteru , Choi, EunMi , Mastovsky, I. , Shapiro, M. A. , Sirigiri, J. R. , Temkin, R. J. , Edmiston, G. F. , Neuber, A. A. , Oda, Y.

Article Issue Date2009-05 View12

Possible use of a high power THz source for gamma ray detection

Choi, Eun Mi

Conference Paper Issue Date2012 View3

Precise measurement of field patterns from a TE02 mode converter using the electro-optic probe scanning system File

Choi, Eun Mi , Lee, Ingeun , Kim, Kwanghoon , Choe, Munseok , Lee, Dongjoon

Conference Paper Issue Date2014-04-23 View9

Proposal of Mode Selection Criterian for Advanced KDEMO Gyrotron File

Sawant, Ashwini , Choi, EunMi , Choe, Mun Seok

Conference Paper Issue Date2016-04-04 View6

Quasi‐optical Mode Converter for a Second Harmonic 0.4THz, 100kW Gyrotron Oscillator

Choi, Eun Mi , None

Conference Paper Issue Date2013 View6

Real-time, remote detection of radioactive material using a high-power millimeter/THz wave vacuum device File

Kim, Dongsung , Yu, Dongho , Sawant, Ashwini , Choe, Mun Ssok , Lee, Ingeun , Choi, EunMi

Conference Paper Issue Date2017-10-10 View7

Reduction of fundamental mode competition in 400 GHz second harmonic Gyrotron

Sawant, Ashwini , 최은미

Conference Paper Issue Date2017-08-24 View10

Remote Detection of Radioactive Material using High-Power Pulsed Electromagnetic Radiation File File

Kim, Dongsung , Yu, Dongho , Sawant, Ashwini , Choe, Mun Seok , Lee, Ingeun , Kim, Sung Gug , Choi, EunMi

Article Issue Date2017-05 View20

Self-Driving Energy-Recirculating Micromachined G-Band Folded Waveguide Traveling-Wave Tube Oscillator File

Lee, Ingeun , Sawant, Ashwini , Shin, Jinwoo , Choi, EunMi

Article Issue Date2018-08 View45

Sensing a radioactive material remotely using a high power THz source

Choi, Eun Mi , Kim, DS , Kim, SG , Lee, WS , So, J

Conference Paper Issue Date2012-11-01 View7

Significant Reduction of Resonant Frequency by Multi-Layered Dielectric Material-Loaded Coaxial Cavity for Microwave Heating File File

Han, TaeGyu , Seo, YouMin , Choi, EunMi

Article Issue Date2022-01 View13

Simulation investigation of Smith-Purcell radiation at THz regime

Choi, Hong Eun , Choi, EunMi

Conference Paper Issue Date2020-08-20 View9

Simulation of Electron Beams With Nonuniform Particle Density for Traveling-Wave Tubes in Emittance-Dominated Regime File

Choi, Wonjin , Choi, EunMi

Conference Paper Issue Date2022-05 View10

Simulation Study of Beam Emittance Effects on Terahertz Traveling-Wave Tubes

Choi, Wonjin , Choi, EunMi

Conference Paper Issue Date2021-08-18 View13

Stability Analysis of 300-GHz Sheet Electron Beam Transport in a Periodic Rectangular Quadrupole File

Choi, Wonjin , Lee, Ingeun , Shin, Jinwoo , Choi, EunMi

Article Issue Date2021-03 View13

Stand-off radiation detection techniques File

Sawant, Ashwini , Kwak, Donghyun , Lee, Ingeun , Chung, Moses , Choi, EunMi

Article Issue Date2020-07 View15

Study of OAM mode identification based on interference patterns with lens integrated meta-material OAM structures

Moon, Seokju , Go, Hyun , Choi, Wonjin , Choi, EunMi

Conference Paper Issue Date2021-08-18 View16

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