Intracavity terahertz difference-frequency generation in an InGaAs-quantum-well two-frequency InGaAsP/InP laser

2009 ◽  
Vol 39 (8) ◽  
pp. 727-730 ◽  
Author(s):  
V Ya Aleshkin ◽  
A A Dubinov
Keyword(s):  
Quantum Well ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Frequency Generation ◽  
Ingaas Quantum Well

THz-Wave Difference Frequency Generation by Phase-Matching in GaAs/Al x Ga 1− x As Asymmetric Quantum Well

2012 ◽  
Vol 29 (1) ◽  
pp. 014207 ◽  
Author(s):  
Xiao-Long Cao ◽  
Yu-Ye Wang ◽  
De-Gang Xu ◽  
Kai Zhong ◽  
Jing-Hui Li ◽  
...  
Keyword(s):  
Quantum Well ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Phase Matching ◽  
Thz Wave ◽  
Asymmetric Quantum ◽  
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.

Sign in / Sign up

Export Citation Format

Share Document