Open AccessGeneration of 019-mJ THz pulses in LiNbO_3 driven by 800-nm femtosecond laser
Author(s) -
Sen-Cheng Zhong,
Jun Li,
Zhangyin Zhai,
Li-Guo Zhu,
Jiang Li,
Pingwei Zhou,
Jun Zhao,
Zeren Li
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.014828
Subject(s) - materials science , optics , terahertz radiation , laser , femtosecond , energy conversion efficiency , fluence , pulse duration , pulse (music) , optoelectronics , laser pumping , femtosecond pulse shaping , physics , detector
A cylindrical lens telescope tilted-pulse-front pumping scheme was proposed for high energy terahertz (THz) pulse generation. This scheme allows higher pump energy to be used with lower saturation effects under high pump fluence, and higher THz generation efficiency was achieved within large range of pump energy. The optimum pump pulse duration and crystal cooling temperature for THz generation in LiNbO 3 (LN) crystal were also researched systematically. Excited by 800-nm laser, up to 0.19 mJ THz pulse energy and 0.27% conversion efficiency was demonstrated under 800-nm 400-fs laser excitation with ~100-mJ pulse energy and 150-K LN cooling temperature.