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Development of intense terahertz light source for forming periodic structures on material surface
Author(s) -
Hosokawa Chikai,
Hashida Masaki,
Nagashima Takeshi,
Inoue Shunsuke,
Sakabe Shuji
Publication year - 2020
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.12284
Subject(s) - terahertz radiation , lithium niobate , optics , materials science , laser , fluence , far infrared laser , optoelectronics , pulse (music) , chirp , physics , detector
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/cm 2 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.