Mid-infrared laser absorption spectrometers based upon all-diode laser difference frequency generation and a room temperature quantum cascade laser for the detection of CO, N2O and NO

2008 ◽  
Vol 92 (2) ◽  
pp. 271-279 ◽  
Author(s):  
V.L. Kasyutich ◽  
R.J. Holdsworth ◽  
P.A. Martin
Keyword(s):  
Diode Laser ◽  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Difference Frequency Generation ◽  
Infrared Laser ◽  
Difference Frequency ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Laser Absorption ◽  
Frequency Generation

Room temperature terahertz quantum cascade laser source based on intracavity difference-frequency generation

2008 ◽  
Vol 92 (20) ◽  
pp. 201101 ◽  
Author(s):  
Mikhail A. Belkin ◽  
Federico Capasso ◽  
Feng Xie ◽  
Alexey Belyanin ◽  
Milan Fischer ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Laser Source ◽  
Quantum Cascade ◽  
Frequency Generation

High power room-temperature design of terahertz quantum cascade laser based on difference frequency generation

Optik ◽  
2014 ◽  
Vol 125 (3) ◽  
pp. 979-983
Author(s):  
A. Selkghaffari ◽  
A. Rostami ◽  
H. Baghban ◽  
M. Dolatyari
Keyword(s):  
Quantum Cascade Laser ◽  
High Power ◽  
Room Temperature ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Quantum Cascade ◽  
Frequency Generation

scholarly journals Optical external efficiency of terahertz quantum cascade laser based on Čerenkov difference frequency generation

2019 ◽  
Vol 28 (04) ◽  
pp. 1950036
Author(s):  
A. Hamadou ◽  
J.-L. Thobel ◽  
S. Lamari
Keyword(s):  
Quantum Cascade Laser ◽  
Quantum Cascade Lasers ◽  
Difference Frequency Generation ◽  
Terahertz Wave ◽  
Difference Frequency ◽  
Infrared Transmission ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Frequency Generation ◽  
External Efficiency

In this paper, we consider terahertz sources based on Čerenkov difference frequency generation in a dual-wavelength mid-infrared quantum cascade laser and calculate analytically the optical external efficiency of the out-going terahertz wave. The mid-infrared pumps operate simultaneously and have a common upper level. For short cavity lengths and low terahertz losses in the substrate, we find that implementation of the Čerenkov emission scheme in terahertz difference frequency generation quantum cascade lasers improves the optical external efficiency dramatically. The maximum value of the latter is close to 19%, but is only attainable if the laser exhibits negligible mid-infrared transmission losses.

scholarly journals Ultra-broadband room-temperature terahertz quantum cascade laser sources based on difference frequency generation

2016 ◽  
Vol 24 (15) ◽  
pp. 16357 ◽  
Author(s):  
Kazuue Fujita ◽  
Masahiro Hitaka ◽  
Akio Ito ◽  
Masamichi Yamanishi ◽  
Tatsuo Dougakiuchi ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Quantum Cascade ◽  
Laser Sources ◽  
Frequency Generation

Widely tuned room temperature terahertz quantum cascade laser sources based on difference-frequency generation

2012 ◽  
Vol 101 (25) ◽  
pp. 251121 ◽  
Author(s):  
Q. Y. Lu ◽  
N. Bandyopadhyay ◽  
S. Slivken ◽  
Y. Bai ◽  
M. Razeghi
Keyword(s):  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Quantum Cascade ◽  
Laser Sources ◽  
Frequency Generation

scholarly journals Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source

Electronics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 336
Author(s):  
Atsushi Nakanishi ◽  
Shohei Hayashi ◽  
Hiroshi Satozono ◽  
Kazuue Fujita
Keyword(s):  
Imaging Technique ◽  
Spectroscopic Imaging ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Quality Monitoring ◽  
Terahertz Emission ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Frequency Generation ◽  
Multi Mode

We demonstrate spectroscopic imaging using a compact ultra-broadband terahertz semiconductor source with a high-power, mid-infrared quantum cascade laser. The electrically pumped monolithic source is based on intra-cavity difference-frequency generation and can be designed to achieve an ultra-broadband multi-mode terahertz emission spectrum extending from 1–4 THz without any external optical setup. Spectroscopic imaging was performed with three frequency bands, 2.0 THz, 2.5 THz and 3.0 THz, and as a result, this imaging technique clearly identified three different tablet components (polyethylene, D-histidine and DL-histidine). This method may be highly suitable for quality monitoring of pharmaceutical materials.

scholarly journals Terahertz quantum-cascade-laser source based on intracavity difference-frequency generation

2007 ◽  
Vol 1 (5) ◽  
pp. 288-292 ◽  
Author(s):  
Mikhail A. Belkin ◽  
Federico Capasso ◽  
Alexey Belyanin ◽  
Deborah L. Sivco ◽  
Alfred Y. Cho ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Laser Source ◽  
Quantum Cascade ◽  
Frequency Generation

1.9 THz Difference-Frequency Generation in Mid-Infrared Quantum Cascade Lasers with Grating Outcouplers

2017 ◽  
Author(s):  
Jae Hyun Kim ◽  
Seungyong Jung ◽  
Yifan Jiang ◽  
Kazuue Fujita ◽  
Masahiro Hitaka ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Frequency Generation ◽  
Cascade Lasers
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