High efficient terahertz generation from cryogenic gallium phosphide based on collinear difference frequency

Jingguo Huang; Yang Li; Yanqing Gao; Gaofang Li; Zhiming Huang; Junhao Chu; Yury Andreev

doi:10.1117/12.2524100

29 March 2019 High efficient terahertz generation from cryogenic gallium phosphide based on collinear difference frequency

Jingguo Huang, Yang Li, Yanqing Gao, Gaofang Li, Zhiming Huang, Junhao Chu, Yury Andreev

Author Affiliations +

Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 1104631 (2019) https://doi.org/10.1117/12.2524100
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China

Abstract

In this paper, a high efficient terahertz source based on n-type gallium phosphide crystal via cryogenic process is investigated through collinear difference frequency generation pumper by 1064 nm Nd:YAG laser and its OPO system. Absorption coefficient of this crystal at THz range shows a dramatic decrease from ~ 50 cm^-1 to 0.5 cm-^-1 as the temperature decreases from 300 k to 80 k. Four times enhancement of the terahertz emission power and much more broad spectra range (~ 0.2- 3.8 THz) has been achieved in this kind of 0.5 mm length gallium phosphide crystal during the whole varied temperature difference frequency generation from 300 k to 80 k. These results indicate that cooling down the crystal temperature is an effective way to improve the terahertz source property, such as terahertz output power and frequency range.

Citation Download Citation

Jingguo Huang, Yang Li, Yanqing Gao, Gaofang Li, Zhiming Huang, Junhao Chu, and Yury Andreev "High efficient terahertz generation from cryogenic gallium phosphide based on collinear difference frequency", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 1104631 (29 March 2019); https://doi.org/10.1117/12.2524100

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available