Possibility of high-energy THz generation in LiTaO3

被引：12

作者：

Tokodi, L. ^{[1
]}

Buzady, A. ^{[1
]}

Hebling, J. ^{[1
,2
,3
]}

Palfalvi, L. ^{[1
]}

机构：

[1] Univ Pecs, Inst Phys, Ifjusag U 6, H-7624 Pecs, Hungary

[2] High Field Terahertz Res Grp MTA PTE, Ifjusag U 6, H-7624 Pecs, Hungary

[3] Univ Pecs, Szentagothai Res Ctr, Ifjusag U 20, H-7624 Pecs, Hungary

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2016年 / 122卷 / 09期

基金：

匈牙利科学研究基金会;

关键词：

STOICHIOMETRIC LITHIUM TANTALATE; ULTRAVIOLET-ABSORPTION EDGE; TIME-DOMAIN SPECTROSCOPY; OPTICAL RECTIFICATION; TERAHERTZ GENERATION; SINGLE-CRYSTALS; COMPOSITION DEPENDENCE; EFFICIENT GENERATION; PULSE GENERATION; DOPED CONGRUENT;

D O I：

10.1007/s00340-016-6513-x

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Due to the absence of the detrimental three-photon absorption, LiTaO3 is a promising crystal for terahertz generation when pumping with an 800-nm pump wavelength. The nonlinear optical, photorefractive and dielectric (except the bandwidth) properties at the optical and the terahertz wavelength are very similar to those of LiNbO3. The absorption coefficient and refractive index spectra of 1 mol% Mg-doped stoichiometric LiTaO3 measured by terahertz time domain spectroscopy are presented. Optimization calculations have been performed, and results for a hybrid-type high-energy terahertz source using LiTaO3 are presented. About 90 % diffraction efficiency is predicted with a practically feasible contact grating.

引用

页数：7

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