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	High efficient terahertz generation from cryogenic gallium phosphide based on collinear difference frequency
	Huang Jingguo; Li Yang; Gao Yanqing; Li Gaofang; Huang Zhiming; Chu Junhao; Andreev Yury
	2019
关键词	无
DOI	10.1117/12.2524100
英文摘要	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.
内容类型	会议论文
源URL	[http://202.127.2.71:8080/handle/181331/12338]
专题	上海技术物理研究所_上海技物所
推荐引用方式 GB/T 7714	Huang Jingguo,Li Yang,Gao Yanqing,et al. High efficient terahertz generation from cryogenic gallium phosphide based on collinear difference frequency[C]. 见:.

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