Terahertz source at 9.4 THz based on a dual-wavelength infrared laser and quasi-phase matching in organic crystals OH1

被引：80

作者：

Majkic, A. ^{[1
,2
]}

Zgonik, M. ^{[1
,2
]}

Petelin, A. ^{[1
]}

Jazbinsek, M. ^{[3
]}

Ruiz, B. ^{[3
]}

Medrano, C. ^{[3
]}

Guenter, P. ^{[3
]}

机构：

[1] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[2] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[3] Rainbow Photon AG, CH-8048 Zurich, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 14期

关键词：

GENERATION; EFFICIENCY;

D O I：

10.1063/1.4897639

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a compact, room temperature, and narrowband terahertz source, based on difference-frequency generation in the organic nonlinear optical crystals OH1 (2-[3-(4-hydroxystyryl)-5, 5-dimethylcyclohex-2-enylidene] malononitrile). The system employs a specific dual-wavelength infrared laser that emits coaxial, synchronous 10-ns pulses of similar energy and duration at wavelengths of 1064 nm and 1030 nm by using Nd:YAG and Yb:YAG crystals within the split laser cavity. The common part of the laser cavity comprises an acousto-optic Q-switch and an output coupler. The output is frequency-mixed in a stack of several OH1 crystals in a quasi-phase-matching configuration, which is determined on the basis of refractive index and absorption measurements in the 1-11 THz range. The system generates terahertz radiation in pulse trains with 1.0 mu W average power and a near-Gaussian intensity profile. (C) 2014 AIP Publishing LLC.

引用

页数：4

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