Research on the beam spot size measurement of terahertz laser

YanZhao Yang; Bin Jiang; Chengping Ying; Kunfeng Chen; Bin Wu; HengFei Wang

doi:10.1117/12.2267295

8 March 2017 Research on the beam spot size measurement of terahertz laser

YanZhao Yang, Bin Jiang, Chengping Ying, Kunfeng Chen, Bin Wu, HengFei Wang

Proceedings Volume 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016; 102553D (2017) https://doi.org/10.1117/12.2267295
Event: Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 2016, Jinhua, Suzhou, Chengdu, Xi'an, Wuxi, China

Abstract

Terahertz technology is getting fast development in scientific research and the characteristics of terahertz beam is of great importance when using a terahertz laser. In this paper we scan the THz beam along its diameter by a slit and a circular aperture to measure the THz beam’s power distribution and thus get its spot’s size. The results show that the beam spot of the THz source we employed is satisfied with Gaussian distribution. The value of the peak power would affect the determination of the spot boundary, the influence of environmental noise will increases when the the peak power become weak and the measured spot diameter will be too large ultimately.

Citation Download Citation

YanZhao Yang, Bin Jiang, Chengping Ying, Kunfeng Chen, Bin Wu, and HengFei Wang "Research on the beam spot size measurement of terahertz laser", Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 102553D (8 March 2017); https://doi.org/10.1117/12.2267295

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