Search Results - "Tsung-Yu Kao"

Phase-locked arrays of surface-emitting terahertz quantum-cascade lasers by Kao, Tsung-Yu, Hu, Qing, Reno, John L.

“…We report the demonstration of phase-locked arrays of surface-emitting distributed-feedback (DFB) terahertz quantum-cascade lasers with single-mode operations…”
Get full text

Amplifiers of free-space terahertz radiation by Kao, Tsung-Yu, Reno, John L., Hu, Qing

“…Here, amplifiers of free-space radiation are quite useful, especially in spectral ranges where the radiation is weak and sensitive detectors are hard to come…”
Get full text

A Terahertz VRT spectrometer employing quantum cascade lasers by Cole, William T.S., Hlavacek, Nik C., Lee, Alan W.M., Kao, Tsung-Yu, Hu, Qing, Reno, John L., Saykally, Richard J.

“…•Design of THz VRT spectrometer utilizing quantum cascade lasers.•Application of spectrometer to pulsed supersonic expansions.•Comparison of QCL system to…”
Get full text

Terahertz laser frequency combs by Burghoff, David, Kao, Tsung-Yu, Han, Ningren, Chan, Chun Wang Ivan, Cai, Xiaowei, Yang, Yang, Hayton, Darren J., Gao, Jian-Rong, Reno, John L., Hu, Qing

“…Terahertz light can be used to identify numerous complex molecules, but has traditionally remained unexploited due to the lack of powerful broadband sources…”
Get full text

Boron Isotopic Analysis of Representative Atmospheric Aerosols Derived From Long-Range Transported/Local Emission on an Islet Offshore NE Taiwan by Lin, Yen-Po, You, Chen-Feng, Kao, Tsung-Yu, Chung, Chuan-Hsiung, Hung, Chung-Chieh Gary

“…To identify pollutant origins and their potential sources from either long-range transported (LRT) or local emissions, the Boron (B) concentrations and the B…”
Get full text

Phase-locked laser arrays through global antenna mutual coupling by Kao, Tsung-Yu, Reno, John L., Hu, Qing

“…Phase locking of an array of lasers is a highly effective method in beam shaping because it increases the output power and reduces the lasing threshold. Here,…”
Get full text

Frequency Tuning of Third-Order Distributed Feedback Terahertz Quantum Cascade Lasers by SiO2 and PMMA by Mirzaei, Behnam, Hayton, Darren, Thoen, David, Jian-Rong Gao, Tsung-Yu Kao, Qing Hu, Reno, John L.

“…We report an extensive study of the effect of an additional dielectric layer on the frequency of terahertz quantum cascade lasers (QCLs). QCLs with third-order…”
Get full text

Compact Metasurface Terahertz Spectrometer by Ji, Wenye, Chang, Jin, Mirzaei, Behnam, Ridder, Marcel, Jellema, Willem, Kao, Tsung‐Yu, Lee, Alan, Gao, Jian Rong, Urbach, Hendrik Paul, Adam, Aurèle J. L.

“…Abstract The terahertz frequency region of the electromagnetic spectrum is crucial for understanding the formation and evolution of galaxies and stars…”
Get full text

A terahertz pulse emitter monolithically integrated with a quantum cascade laser by Burghoff, David, Kao, Tsung-Yu, Ban, Dayan, Lee, Alan Wei Min, Hu, Qing, Reno, John

“…A terahertz pulse emitter monolithically integrated with a quantum cascade laser (QCL) is demonstrated. The emitter facet is excited by near-infrared pulses…”
Get full text

True phase-matched third-order DFB terahertz quantum-cascade lasers using weakly-coupled cavities by Tsung-Yu Kao, Qing Hu, Reno, John L.

“…We report a novel laser cavity design in third-order distributed feedback terahertz quantum-cascade lasers based on true phase-matching technique. This…”
Get full text

Comparison of grouper infection with two different iridoviruses using transcriptome sequencing and multiple reference species selection by Liu, Chun-Cheng, Ho, Li-Ping, Yang, Cin-Hang, Kao, Tsung-Yu, Chou, Hsin-Yiu, Pai, Tun-Wen

“…Due to high-density aquafarming in Taiwan, groupers are commonly infected with two different iridoviruses: Megalocytivirus (grouper iridovirus of Taiwan, TGIV)…”
Get full text

Antenna coupled photonic wire lasers by Kao, Tsung-Yu, Cai, Xiaowei, Lee, Alan W M, Reno, John L, Hu, Qing

“…Slope efficiency (SE) is an important performance metric for lasers. In conventional semiconductor lasers, SE can be optimized by careful designs of the facet…”
Get full text

Gain measurements of a metal-metal terahertz quantum cascade laser using an integrated terahertz pulse emitter by Burghoff, David, Tsung-Yu Kao, Ban, Dayan, Lee, Alan Wei Min, Reno, John L., Qing Hu

“…A terahertz pulse emitter is fabricated alongside a quantum cascade laser with a metal-metal waveguide. Terahertz pulses are used to measure the gain of the…”
Get full text

Microstrip antenna coupled distributed feedback terahertz quantum-cascade lasers by Tsung-Yu Kao, Qing Hu, Reno, John L.

“…By introducing coupled microstrip antennas on distributed feedback terahertz quantum-cascade lasers, the radiation efficiency of each aperture is greatly…”
Get full text

A 4.7 THz HEB/QCL heterodyne receiver for STO-2 by Hayton, Darren J., Kloosterman, Jenna L., Jian-rong Gao, Vercruyssen, Nathan, Walker, Chris K., Qing Hu, Tsung-Yu Kao

“…We report on a 4.7 THz heterodyne receiver being developed to fly on the Stratospheric Terahertz Observatory (STO-2) balloon platform. The receiver is based on…”
Get full text

Development of terahertz laser frequency combs by Burghoff, David, Tsung-Yu Kao, Ningren Han, Chan, Chun Wang Ivan, Hayton, Darren J., Jian-Rong Gao, Reno, John L., Qing Hu

“…We demonstrate broadband terahertz laser frequency combs, compact semiconductor devices that combine the high power of lasers with the broad spectra of pulsed…”
Get full text

Phase-locked arrays of surface-emitting terahertz quantum-cascade lasers by Tsung-Yu Kao, Qing Hu, Reno, John L

“…We report single-mode operation of phase-locked arrays of surface-emitting distributed-feedback terahertz quantum-cascade lasers. Carefully-designed…”
Get full text

THz optical coherence tomography based on quantum cascade lasers by Lee, A. W. M., Tsung-Yu Kao, Burgoff, D., Qing Hu, Reno, J. L.

“…The interfaces of a dielectric sample are resolved at terahertz frequencies by swept-source optical coherence tomography. The source is a 12-element array of…”
Get full text

THz Transmission through Submillimeter Apertures by LaFave, Tim, Lee, Alan W. M., Kao, Tsung-Yu, Markelz, Andrea

“…Terahertz near-field microspectroscopy is emerging as an essential tool for characterization of novel materials and biomolecules. It is important to ensure the…”
Get full text

Phase-locked laser array through global antenna mutual coupling by Kao, Tsung -Yu, Reno, John L., Hu, Qing

“…Here, phase locking of an array of lasers is a highly effective way in beam shaping, to increase the output power, and to reduce lasing threshold. In this…”
Get full text