A source of THz radiation with electric field strength of more than 1 MV cm-1 on the basis of 100-Hz femtosecond Cr : forsterite laser system

被引：21

作者：

Ovchinnikov, A. V. ^{[1
]}

Chefonov, O. V. ^{[1
]}

Sitnikov, D. S. ^{[1
]}

Il'ina, I. V. ^{[1
]}

Ashitkov, S. I. ^{[1
]}

Agranat, M. B. ^{[1
]}

机构：

[1] Russian Acad Sci, Joint Inst High Temp, Ul Izhorskaya 13,Stroenie 2, Moscow 125412, Russia

来源：

QUANTUM ELECTRONICS | 2018年 / 48卷 / 06期

关键词：

multipass amplifier; femtosecond laser pulse; optical rectification; terahertz radiation; TERAHERTZ PULSES; LITHIUM-NIOBATE; GENERATION; RECTIFICATION; EFFICIENCY; ENERGY; DSTMS; GAS;

D O I：

10.1070/QEL16681

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A source of terahertz (THz) radiation with a bandwidth of 0.5-2.5 THz and a pulse repetition rate of 100 Hz has been developed. The THz generation is based on optical rectification of femtosecond pulses (generated by a Cr : forsterite laser system) in a nonlinear organic crystal OH1. An optical scheme of a multipass amplifier for the Cr : forsterite laser system is developed to increase the pulse energy to 2.2 mJ. The conversion efficiency for pump laser radiation at a wavelength of 1.24 mu m into THz radiation is found to be to 2%. An electric field strength of 3.5 MV cm(-1) is attained when focusing a THz beam into a near diffraction-limited spot.

引用

页码：554 / 558

页数：5

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