The scheme of efficient terahertz difference frequency generation in two-dimensional periodical crystals by CO 2 laser

2012 ◽  
Author(s):  
Zhiming Rao ◽  
Tao Wu ◽  
Yan He ◽  
Qing Ye ◽  
Keyun Xiong ◽  
...  
Keyword(s):  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Two Dimensional ◽  
Frequency Generation

scholarly journals Difference frequency generation in monolayer MoS2

Nanoscale ◽  
2020 ◽  
Vol 12 (38) ◽  
pp. 19638-19643
Author(s):  
Yadong Wang ◽  
Masood Ghotbi ◽  
Susobhan Das ◽  
Yunyun Dai ◽  
Shisheng Li ◽  
...  
Keyword(s):  
Difference Frequency Generation ◽  
Layered Materials ◽  
Difference Frequency ◽  
Two Dimensional ◽  
Monolayer Mos2 ◽  
Parametric Generation ◽  
Optical Parametric ◽  
Optical Parametric Generation ◽  
Frequency Generation

We have demonstrated broadband difference frequency generation with monolayer MoS2, showing possibility of using two-dimensional layered materials for optical parametric generation, amplification and oscillation.

Čerenkov difference frequency generation in a two-dimensional nonlinear photonic crystal

2012 ◽  
Vol 101 (7) ◽  
pp. 071113 ◽  
Author(s):  
C. D. Chen ◽  
X. P. Hu ◽  
Y. L. Xu ◽  
P. Xu ◽  
G. Zhao ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Two Dimensional ◽  
Nonlinear Photonic Crystal ◽  
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.

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