Tsung‐Tse Lin
YOU?
Author Swipe
View article: Enhanced surface emission in terahertz quantum cascade lasers using plasma layer assisted photonic crystal waveguides
Enhanced surface emission in terahertz quantum cascade lasers using plasma layer assisted photonic crystal waveguides Open
Introduction: Surface-emitting terahertz quantum cascade lasers (THz QCLs) are highly promising for applications requiring high-quality far-field beams and controlled beam divergence. However, limited brightness and output power in convent…
View article: Terahertz quantum cascade lasers employing convex phonon well
Terahertz quantum cascade lasers employing convex phonon well Open
The 3-level resonant-phonon scheme, a predominant approach for achieving high-temperature operation in terahertz quantum cascade lasers, has recently gained conspicuous progress by purifying the lasing of relevant quantum levels from nonre…
View article: Explicit Two-Sided Vertex Expanders Beyond the Spectral Barrier
Explicit Two-Sided Vertex Expanders Beyond the Spectral Barrier Open
We construct the first explicit two-sided vertex expanders that bypass the spectral barrier. Previously, the strongest known explicit vertex expanders were given by $d$-regular Ramanujan graphs, whose spectral properties imply that every s…
View article: Enhanced TM-Mode 3D Coupled Wave Theory for Photonic Crystal Surface-Emitting Terahertz Quantum Cascade Lasers
Enhanced TM-Mode 3D Coupled Wave Theory for Photonic Crystal Surface-Emitting Terahertz Quantum Cascade Lasers Open
In this study, we propose and develop an enhanced three-dimensional coupled wave theory (3D CWT) to investigate the optical field behavior in photonic crystal surface-emitting terahertz quantum cascade lasers (THz-QCLs). By incorporating a…
View article: Gate-readout and a 3D rectification effect for giant responsivity enhancement of asymmetric dual-grating-gate plasmonic terahertz detectors
Gate-readout and a 3D rectification effect for giant responsivity enhancement of asymmetric dual-grating-gate plasmonic terahertz detectors Open
We experimentally investigated the asymmetric dual-grating-gate plasmonic terahertz (THz) detector based on an InGaAs-channel high-electron-mobility transistor (HEMT) in the gate-readout configuration. Throughout the THz pulse detection me…
View article: Doping study of two-well resonant-phonon terahertz quantum cascade lasers part I: doping profile dependence
Doping study of two-well resonant-phonon terahertz quantum cascade lasers part I: doping profile dependence Open
The influence of impurity doping on GaAs-based two-well resonant-phonon terahertz quantum cascade lasers is investigated theoretically, and efficient doping schemes are discussed. By using the rate equation model, the impacts of dopant amo…
View article: Nonrelevant quantum levels effecting on the current in 2-well terahertz quantum cascade lasers
Nonrelevant quantum levels effecting on the current in 2-well terahertz quantum cascade lasers Open
Recent renewed operating temperatures in terahertz quantum cascade lasers emphasize on narrowing the periodic length in a 2-well resonant-phonon design for a clean quantum level structure, in which the depopulation energy is significantly …
View article: Surface-emitting photonic crystal terahertz quantum cascade laser adopting uniform triangular prism photonic crystal with a double-metal waveguide
Surface-emitting photonic crystal terahertz quantum cascade laser adopting uniform triangular prism photonic crystal with a double-metal waveguide Open
Herein, we investigate surface-emitting photonic crystal terahertz quantum cascade lasers adopting double metal waveguide for high light extraction efficiency by utilizing finite-difference time-domain and filter diagonalization method. Fo…
View article: Leakages suppression by isolating the desired quantum levels for high-temperature terahertz quantum cascade lasers
Leakages suppression by isolating the desired quantum levels for high-temperature terahertz quantum cascade lasers Open
The key challenge for terahertz quantum cascade lasers (THz-QCLs) is to make it operating at room-temperature. The suppression of thermally activated leakages via high lying quantum levels is emphasized recently. In this study, we employ t…
View article: Study on high power and control of metamaterial THz QCLs
Study on high power and control of metamaterial THz QCLs Open
Quantum-cascade lasers (QCLs) are a special kind of semiconductor laser. They emit in the mid- and long-wave infrared bands and, instead of operating on laser transitions between different electronic bands, they operate on intersubband tra…
View article: Study on high power and control of metamaterial THz QCLs
Study on high power and control of metamaterial THz QCLs Open
Quantum-cascade lasers (QCLs) are a special kind of semiconductor laser. They emit in the mid- and long-wave infrared bands and, instead of operating on laser transitions between different electronic bands, they operate on intersubband tra…
View article: Development of High Power Terahertz Quantum Cascade Lasers by Reducing Leakage Current Using Non-Equilibrium Green’s Function Method
Development of High Power Terahertz Quantum Cascade Lasers by Reducing Leakage Current Using Non-Equilibrium Green’s Function Method Open
Terahertz quantum cascade lasers (THz QCLs) are semiconductor-based promising high output power THz sources with narrow bandwidth and wide operation frequency. Here we report the progress on high-power THz QCLs based on optimization of the…
View article: Short-period scattering-assisted terahertz quantum cascade lasers operating at high temperatures
Short-period scattering-assisted terahertz quantum cascade lasers operating at high temperatures Open
Operating at high temperatures in the range of thermoelectric coolers is essential for terahertz quantum cascade lasers to real applications. The use of scattering-assisted injection scheme enables an increase in operating temperature. Thi…
View article: THz QCLs Design Toward Real Applications
THz QCLs Design Toward Real Applications Open
For highly desired THz applications, we discuss the design and fabrication of THz quantum cascade lasers (QCLs) toward the high temperature and large average output power operations for the real applications with the relatively compact por…
View article: Design for Stable Lasing of an Indirect Injection THz Quantum Cascade Laser Operating at Less Than 2 THz
Design for Stable Lasing of an Indirect Injection THz Quantum Cascade Laser Operating at Less Than 2 THz Open
In order to realize high temperature lasing of low frequency (< 2 THz) terahertz quantum cascade lasers (THz QCLs), selective carrier injection into an upper lasing level using an indirect injection (II) scheme is an effective method for i…
View article: Recent Progress of Terahertz Quantum Cascade Lasers
Recent Progress of Terahertz Quantum Cascade Lasers Open
Terahertz quantum cascade laser (THz-QCL) is a compact, high output power, narrow linewidth and low cost terahertz laser, and is very attractive for a lot of applications as a practical use terahertz light source. In this report, we demons…