High performance room temperature quantum cascade lasers based on three-phonon-resonance depopulation

Author(s):  
Qi Jie Wang ◽  
Christian Pflugl ◽  
Tadataka Edamura ◽  
Hirofumi Kan ◽  
Federico Capasso
Nanophotonics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 2235-2241 ◽  
Author(s):  
Kazuue Fujita ◽  
Shohei Hayashi ◽  
Akio Ito ◽  
Masahiro Hitaka ◽  
Tatsuo Dougakiuchi

AbstractTerahertz quantum cascade laser sources with intra-cavity non-linear frequency mixing are the first room-temperature electrically pumped monolithic semiconductor sources that operate in the 1.2–5.9 THz spectral range. However, high performance in low-frequency range is difficult because converted terahertz waves suffer from significantly high absorption in waveguides. Here, we report a sub-terahertz electrically pumped monolithic semiconductor laser. This sub-terahertz source is based on a high-performance, long-wavelength (λ ≈ 13.7 μm) quantum cascade laser in which high-efficiency terahertz generation occurs. The device produces peak output power of 11 μW within the 615–788 GHz frequency range at room temperature. Additionally, a source emitting at 1.5 THz provides peak output power of 287 μW at 110 K. The generated terahertz radiation of <2 THz is mostly attributable to the optical rectification process in long-wavelength infrared quantum cascade lasers.


2010 ◽  
Vol 97 (11) ◽  
pp. 111113 ◽  
Author(s):  
J. P. Commin ◽  
K. Kennedy ◽  
D. G. Revin ◽  
S. Y. Zhang ◽  
A. B. Krysa ◽  
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2011 ◽  
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pp. 17203 ◽  
Author(s):  
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Arkadiy Lyakh ◽  
Alexei Tsekoun ◽  
C. Kumar N. Patel

2008 ◽  
Vol 44 (8) ◽  
pp. 525 ◽  
Author(s):  
Q.J. Wang ◽  
C. Pflügl ◽  
L. Diehl ◽  
F. Capasso ◽  
S. Furuta ◽  
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1996 ◽  
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pp. 560 ◽  
Author(s):  
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F. Capasso ◽  
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D.L. Sivco ◽  
A.L. Hutchinson ◽  
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2011 ◽  
Vol 23 (12) ◽  
pp. 774-776 ◽  
Author(s):  
A B Krysa ◽  
D G Revin ◽  
J P Commin ◽  
C N Atkins ◽  
K Kennedy ◽  
...  

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