用于产生脉冲橙色光的双波长Nd:YVO₄激光器中的二维非周期非线性光子晶体

Two-dimensional aperiodic nonlinear photonic crystal in a dual-wavelength Nd:YVO₄ laser for pulsed orange generation.

作者信息

Chou P Y, Chang W K, Chung H P, Chen Y H

出版信息

Opt Express. 2014 Nov 17;22(23):28857-64. doi: 10.1364/OE.22.028857.

DOI:10.1364/OE.22.028857

Abstract

We report the design and construction of a highly integrated two-dimensional (2D) aperiodic nonlinear photonic crystal (NPC) for working in a diode-pumped, dual-wavelength (1064 and 1342 nm) Nd:YVO₄ laser to demonstrate a compact, high-peak-power intracavity sum-frequency generator (ISFG) radiating at orange 593.5 nm. The 2D aperiodic NPC was built in quasi-phase-matched LiNbO₃whose crystal domain was structured based on the aperiodic optical superlattice technique to best achieve its simultaneous performance of a dual-wavelength electro-optic Bragg Q-switch and a SFG in the Nd:YVO₄ laser. When the NPC device was driven with a 350-V Q-switching voltage and a 1-kHz switching rate, we measured pulse energy of ~4.3 μJ (or peak power of ~531 W) at orange 593.5 nm from the constructed ISFG with 5.28-W diode power.

摘要

我们报道了一种高度集成的二维（2D）非周期非线性光子晶体（NPC）的设计与构建，该晶体用于二极管泵浦的双波长（1064和1342 nm）Nd:YVO₄激光器，以展示一个紧凑的、在橙色593.5 nm处辐射的高峰值功率腔内和频发生器（ISFG）。二维非周期NPC构建于准相位匹配的LiNbO₃中，其晶体畴基于非周期光学超晶格技术构建，以最佳地实现其在Nd:YVO₄激光器中作为双波长电光布拉格Q开关和和频发生器的同时性能。当NPC器件以350 V的Q开关电压和1 kHz的开关速率驱动时，我们用5.28 W的二极管功率从构建的ISFG在橙色593.5 nm处测量到约4.3 μJ的脉冲能量（或约531 W的峰值功率）。