Time-resolved measurement of the local lattice temperature in terahertz quantum cascade lasers

2008 ◽  
Vol 92 (10) ◽  
pp. 101116 ◽  
Author(s):  
Miriam S. Vitiello ◽  
Gaetano Scamarcio ◽  
Vincenzo Spagnolo
2018 ◽  
Vol 89 (7) ◽  
pp. 073101
Author(s):  
Ke Ye ◽  
Xiaowei Chen ◽  
Wenwen Zhang ◽  
Yankun Lv ◽  
Lingpu Meng ◽  
...  

2014 ◽  
Vol 22 (3) ◽  
pp. 2656 ◽  
Author(s):  
Markus Brandstetter ◽  
Andreas Genner ◽  
Clemens Schwarzer ◽  
Elvis Mujagic ◽  
Gottfried Strasser ◽  
...  

Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 583
Author(s):  
Kamil Pierściński ◽  
Dorota Pierścińska ◽  
Grzegorz Sobczak ◽  
Aleksandr Kuźmicz ◽  
Krzysztof Chmielewski ◽  
...  

Mid-infrared (mid-IR λ ≈ 3–12 μm), single-mode-emission Quantum Cascade Lasers (QCLs) are of significant interest for a wide range of applications, especially as the laser sources are chosen for laser absorption spectroscopy. In this work, we present the design, fabrication and characterization of multi-section, coupled-cavity, mid-IR quantum cascade lasers. The purpose of this work is to propose a design modification for a coupled-cavity device, yielding a single-mode emission with a longer range of continuous tuning during the pulse, in contrast to a 2-section device. This effect was obtained and demonstrated in the work. The proposed design of a 3-section coupled-cavity QCL allows for a single-mode emission with 35 dB side-mode suppression ratio. Additionally, the time-resolved spectra of the wavelength shift during pulse operation, show a continuous tuning of ~3 cm−1 during the 2 μs pulse. The devices were fabricated in a slightly modified, standard laser process using dry etching.


2009 ◽  
Vol 45 (4) ◽  
pp. 307-321 ◽  
Author(s):  
Hyunyong Choi ◽  
Laurent Diehl ◽  
Zong-Kwei Wu ◽  
Marcella Giovannini ◽  
JÉrÔme Faist ◽  
...  

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