Thursday, November 5, 2020

Abstract-Development of intense terahertz light source for forming periodic structures on material surface

                                    

Chikai Hosokawa, Masaki Hashida, Takeshi Nagashima,  Shunsuke Inoue, Shuji Sakabe,


 https://onlinelibrary.wiley.com/doi/abs/10.1002/ecj.12284

We have developed an intense terahertz wave source aiming at in situ measurement of periodic surface structures induced by terahertz waves on solid materials with high‐spatiotemporal resolution. An intense terahertz wave of 119 µJ was generated from a Lithium Niobate crystal induced with an intense laser with fluence of 25 mJ/cm2 by tilted pulse front method. By applying a negative chirp to the laser pulse, the pulse width spread inside the crystal was compensated, and the output of the terahertz wave was maximized.

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