Al0.45Ga0.55As/GaAs-based single-mode distributed-feedback quantum-cascade lasers with surface gratings

2017 ◽  
Author(s):  
Anna Szerling ◽  
Renata Kruszka ◽  
Kamil Kosiel ◽  
Marek Wzorek ◽  
Krystyna Gołaszewska ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Distributed Feedback ◽  
Quantum Cascade ◽  
Cascade Lasers

Single-mode, tunable distributed-feedback and multiple-wavelength quantum cascade lasers

2002 ◽  
Vol 38 (6) ◽  
pp. 569-581 ◽  
Author(s):  
C. Gmachl ◽  
A. Straub ◽  
R. Colombelli ◽  
F. Capasso ◽  
D.L. Sivco ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Distributed Feedback ◽  
Quantum Cascade ◽  
Multiple Wavelength ◽  
Cascade Lasers

scholarly journals Long Wavelength (λ > 17 µm) Distributed Feedback Quantum Cascade Lasers Operating in a Continuous Wave at Room Temperature

Photonics ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 31 ◽  
Author(s):  
Hoang Nguyen Van ◽  
Zeineb Loghmari ◽  
Hadrien Philip ◽  
Michael Bahriz ◽  
Alexei Baranov ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Room Temperature ◽  
Continuous Wave ◽  
Quantum Cascade Lasers ◽  
Molecular Spectroscopy ◽  
Single Mode ◽  
Distributed Feedback ◽  
Long Wavelength ◽  
Quantum Cascade ◽  
Cascade Lasers

The extension of the available spectral range covered by quantum cascade lasers (QCL) would allow one to address new molecular spectroscopy applications, in particular in the long wavelength domain of the mid-infrared. We report in this paper the realization of distributed feedback (DFB) QCLs, made of InAs and AlSb, that demonstrated a continuous wave (CW) and a single mode emission at a wavelength of 17.7 µm, with output powers in the mW range. This is the longest wavelength for DFB QCLs, and for any QCLs or semiconductor lasers in general, operating in a CW at room temperature.

Stable single mode operation of quantum cascade lasers by complex-coupled second-order distributed feedback grating

2015 ◽  
Vol 103 ◽  
pp. 79-82
Author(s):  
Yinghui Liu ◽  
Jinchuan Zhang ◽  
Zhiwei Jia ◽  
Danyang Yao ◽  
Fangliang Yan ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Second Order ◽  
Distributed Feedback ◽  
Single Mode Operation ◽  
Quantum Cascade ◽  
Mode Operation ◽  
Cascade Lasers

Electrically Pumped Photonic Crystal Distributed Feedback Quantum Cascade Lasers

2008 ◽  
Vol 1076 ◽  
Author(s):  
Manijeh Razeghi ◽  
Yanbo Bai ◽  
Steven Slivken ◽  
Wei Zhang
Keyword(s):  
Photonic Crystal ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Distributed Feedback ◽  
Broad Area ◽  
Quantum Cascade ◽  
Mode Operation ◽  
Fabry Perot ◽  
Electrically Pumped ◽  
Cascade Lasers

ABSTRACTIn parallel with the effort to improve the efficiency of Quantum cascade lasers (QCL) for high power continuous wave (CW) operations, the peak power in pulsed mode operation can be easily scaled up with larger emitting volumes, i.e., processing QCLs into broad area lasers. However, as the emitter width increases, multi-mode operation happens due to poorer lateral mode distinguishability. By putting a two dimensional photonic crystal distributed feedback (PCDFB) layer evanescently coupled to the main optical mode, both longitudinal and lateral beam coherence can be greatly enhanced, which makes single mode operation possible for broad area devices. For PCDFB laser performance, the linewidth enhancement factor (LEF) plays an important role in controlling the optical coherence. Being intersubband devices, QCLs have an intrinsically small LEF, thus serves better candidates over interband lasers for PCDFB applications. We demonstrate electrically pumped, room temperature, single mode operation of photonic crystal distributed feedback quantum cascade lasers emitting at λ ∼ 4.75 μm. Ridge waveguides of 50 μm and 100 μm width were fabricated with both PCDFB and Fabry-Perot feedback mechanisms. The Fabry-Perot device has a broad emitting spectrum and a broad far-field character. The PCDFB devices have primarily a single spectral mode and a diffraction limited far field characteristic with a full angular width at half-maximum of 4.8 degrees and 2.4 degrees for the 50 μm and 100 μm ridge widths, respectively.

Single-mode operation of terahertz quantum cascade lasers with distributed feedback resonators

2004 ◽  
Vol 84 (26) ◽  
pp. 5446-5448 ◽  
Author(s):  
Lukas Mahler ◽  
Rüdeger Köhler ◽  
Alessandro Tredicucci ◽  
Fabio Beltram ◽  
Harvey E. Beere ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Distributed Feedback ◽  
Single Mode Operation ◽  
Quantum Cascade ◽  
Mode Operation ◽  
Cascade Lasers

Al0.45Ga0.55As / GaAs -based single-mode distributed-feedback quantum-cascade lasers with surface gratings

2017 ◽  
Vol 11 (2) ◽  
pp. 026004
Author(s):  
Anna Szerling ◽  
Renata Kruszka ◽  
Kamil Kosiel ◽  
Marek Wzorek ◽  
Krystyna Golaszewska ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Distributed Feedback ◽  
Quantum Cascade ◽  
Cascade Lasers

Stable single-mode distributed feedback quantum cascade lasers at λ∼4.25μm with low power consumption

2016 ◽  
Vol 124 ◽  
pp. 42-45
Author(s):  
Zhiwei Jia ◽  
Lijun Wang ◽  
Jinchuan Zhang ◽  
Fengqi Liu ◽  
Ning Zhuo ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Distributed Feedback ◽  
Low Power Consumption ◽  
Quantum Cascade ◽  
Cascade Lasers
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