Nonlinear coefficient and temperature dependence of the refractive index of lithium niobate crystals in the terahertz regime

被引：26
|
作者：
Sowade, R. [1 ]
Breunig, I. [1 ]
Tulea, C. [1 ]
Buse, K. [1 ]
机构：
[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2010年 / 99卷 / 1-2期
关键词：
CONTINUOUS-WAVE; GENERATION; PULSES; LINBO3;
D O I：
10.1007/s00340-010-3897-x
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The effective nonlinear coefficient d (eff) of lithium niobate is determined to be 94 pm/V for a process that converts infrared light to 1.35 THz radiation. This value is inferred from the performance of a continuous-wave, singly-resonant optical parametric oscillator, in which the cavity-enhanced signal wave of a primary parametric process acts as a pump wave for a cascaded process, generating terahertz waves. To quantify the nonlinear coefficient, the coupled wave equations including absorption are evaluated. Furthermore, from our measurements we also determine the temperature dependence of the refractive index to be dn (THz)/dT=0.0013/K around 1.4 THz.
引用
收藏
页码：63 / 66
页数：4
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