Open AccessTemperature insensitive, high-power cascaded optical parametric oscillator based on an aperiodically poled lithium niobate crystal
Author(s) -
Tao Chen,
Peipei Jiang,
Bo Wu,
Rong Shu,
Chengzhi Hu,
Yun Shen
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.026900
Subject(s) - optical parametric oscillator , energy conversion efficiency , lithium niobate , optics , materials science , laser , signal (programming language) , slope efficiency , crystal (programming language) , nonlinear optics , ytterbium , wavelength , optoelectronics , fiber laser , doping , physics , computer science , programming language
We report a novel temperature insensitive, APMgLN-based, high-power cascaded optical parametric oscillator (OPO) pumped by an Ytterbium-doped fiber laser. A monolithic APMgLN crystal was designed to compensate the phase mismatches for the nonlinear conversions from the pump to the idler and the primary signal to the idler simultaneously in a wide temperature range. Efficient parametric conversion with pump-to-idler conversion efficiency over 15% and slope efficiency higher than 20% was realized from 25 °C to 55 °C. The idler wavelength was down-shifted from 3.82 μm to 3.78 μm accordingly during the temperature rise. The highest idler power of 4.1 W at 3.8 μm under the pump power of 26.5 W was recorded which was improved by ~32% in pump-to-idler conversion efficiency when compared with the PPMgLN-based conventional OPO, in which the highest idler output power was 3.1W under the same pump and thermal condition.