Continuous-Wave Intracavity Multiple Optical Parametric Oscillator Using an Aperiodically Poled Lithium Niobate Around 1.57 and 3.84 mu m
IEEE PHOTONICS JOURNAL
Authors: Yu, Yongji; Chen, Xinyu; Cheng, Libo; Li, Shutao; Wu, Chunting; Dong, Yuan; Fu, Yuegang; Jin, Guangyong
Abstract
A continuous-wave 1.57 and 3.84 mu m intracavity multiple optical parametric oscillator based on a single MgO:APLN crystal is reported for the first time. The synchronized dual-wavelength laser is obtained by using a folded-type double cavity, which consists of a 1064-nm resonator and a multiple optical parametric oscillator. With T = 10% at 1.47 and 3.3 mu m output couplers, maximum output powers of 3.13 W at 1.57 mu m and 0.85 W at 3.84 mu m are obtained, corresponding to slope efficiencies of 6.8% and 1.9%, respectively. The power stabilities are better than 1.8% and 3% at the maximum output power in half an hour.
Broad flattened bandwidth wavelength conversion based on difference-frequency generation in aperiodically poled lithium niobate
APOC 2002: ASIA-PACIFIC OPTICAL AND WIRELESS COMMUNICATIONS, OPTIAL FIBER AND PLANAR WAVEGUIDE TECHNOLOGY II
Authors: Song, YJ; Zhan, L; Ye, QH; Xia, YX
Abstract
We propose a general routine, Genetic-Simulated Annealing method (GSA) for the optimal design of quasi-phase matched (QPM) non-uniform grating. Here this method is applied to the design of the flat broadened wavelength conversion bandwidth of 40-mm aperiodically poled lithium niobate (APLN) based on difference-frequency generation (DFG). The flat conversion bandwidth of APLN is broadened from the original 65 nm in a 40-mm periodically poled lithium niobate (PPLN) to the pre-designated 130 nm in a 40-mm APLN, which conversion efficiency is 6.7 dB higher than that of 12.4-mm PPLN under the same conversion bandwidth.
COA
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