Scalable terahertz generation by large-area optical rectification at 80 TW laser power
Optics
2020-01-08 v1
Abstract
We demonstrate high-energy terahertz generation from a large-aperture (75 mm diameter) lithium niobate wafer by using a femtosecond laser with energy up to 2 J. This scheme utilizes optical rectification in a bulk lithium niobate crystal, where most terahertz energy is emitted from a thin layer of the rear surface. Despite its simple setup, this scheme can yield 0.19 mJ of terahertz energy with laser-to-terahertz conversion efficiencies of ~0.01%, about 3 times better than ZnTe when pumped at 800 nm. The experimental setup is up-scalable for multi-mJ terahertz generation with petawatt laser pumping.
Keywords
Cite
@article{arxiv.1907.07704,
title = {Scalable terahertz generation by large-area optical rectification at 80 TW laser power},
author = {Dogeun Jang and Chul Kang and Seong Ku Lee and Jae Hee Sung and Chul-sik Kee and Ki-yong Kim},
journal= {arXiv preprint arXiv:1907.07704},
year = {2020}
}
Comments
4 pages, 4 figures