Single-shot measurement of THz pulses

doi:10.1088/1674-1056/ab821f

中国物理B ›› 2020, Vol. 29 ›› Issue (5): 57803-057803.doi: 10.1088/1674-1056/ab821f

所属专题： SPECIAL TOPIC —Terahertz physics

Single-shot measurement of THz pulses

Lei Yang(杨磊), Lei Hou(侯磊), Chengang Dong(董陈岗), Wei Shi(施卫)

Key Laboratory of Ultrafast Photoelectric Technology and Terahertz Science in Shaanxi, Xi'an University of Technology, Xi'an 710048, China

收稿日期:2020-03-10 修回日期:2020-03-16 出版日期:2020-05-05 发布日期:2020-05-05
通讯作者: Wei Shi E-mail:swshi@mail.xaut.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61427814 and 61575161), the National Key Research and Development Program of China (Grant No. 2017YFA0701005), and the Natural Science Foundation of Shaanxi Province, China (Grant No. 2019JZ-04).

Single-shot measurement of THz pulses

Lei Yang(杨磊), Lei Hou(侯磊), Chengang Dong(董陈岗), Wei Shi(施卫)

Key Laboratory of Ultrafast Photoelectric Technology and Terahertz Science in Shaanxi, Xi'an University of Technology, Xi'an 710048, China

Received:2020-03-10 Revised:2020-03-16 Online:2020-05-05 Published:2020-05-05
Contact: Wei Shi E-mail:swshi@mail.xaut.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61427814 and 61575161), the National Key Research and Development Program of China (Grant No. 2017YFA0701005), and the Natural Science Foundation of Shaanxi Province, China (Grant No. 2019JZ-04).

摘要/Abstract

摘要： Terahertz (THz) waves have shown a broad prospect in the analysis of some dielectric materials because of their special properties. For the ultrafast irreversible processes, the THz single-shot measurement is a good choice. In this paper, a single-shot system is investigated, where a pump beam is used to generate THz pulses with high electrical field by optical rectification in LiNbO₃, the probe beam with wavefront tilted by a blazed grating is used for single-shot measurement. The time window is up to 90 ps, the signal to noise ratio is 2000:1, the spectrum covers from 0.1 THz to about 2.0 THz, and the spectral resolution is 0.011 THz. The single-shot measurement result agrees well with that of a traditional electrical-optic sampling method.

关键词: terahertz waves, tilted wavefront, single-shot measurement

Abstract: Terahertz (THz) waves have shown a broad prospect in the analysis of some dielectric materials because of their special properties. For the ultrafast irreversible processes, the THz single-shot measurement is a good choice. In this paper, a single-shot system is investigated, where a pump beam is used to generate THz pulses with high electrical field by optical rectification in LiNbO₃, the probe beam with wavefront tilted by a blazed grating is used for single-shot measurement. The time window is up to 90 ps, the signal to noise ratio is 2000:1, the spectrum covers from 0.1 THz to about 2.0 THz, and the spectral resolution is 0.011 THz. The single-shot measurement result agrees well with that of a traditional electrical-optic sampling method.

Key words: terahertz waves, tilted wavefront, single-shot measurement

中图分类号: (Ultrafast spectroscopy (<1 psec))

78.47.J-

杨磊, 侯磊, 董陈岗, 施卫. Single-shot measurement of THz pulses[J]. 中国物理B, 2020, 29(5): 57803-057803.

Lei Yang(杨磊), Lei Hou(侯磊), Chengang Dong(董陈岗), Wei Shi(施卫). Single-shot measurement of THz pulses[J]. Chin. Phys. B, 2020, 29(5): 57803-057803.

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Single-shot measurement of THz pulses

Single-shot measurement of THz pulses

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