Open AccessRoom temperature watt-level 3.87 µm MgO:PPLN optical parametric oscillator under pumping with a Tm:YAP laser
Author(s) -
Lei Guo,
Yaling Yang,
Shengzhi Zhao,
Tao Li,
Wenchao Qiao,
B.M. Ma,
Hongkun Nie,
Shuai Ye,
Ruihua Wang,
Baitao Zhang,
Kejian Yang,
Jingliang He
Publication year - 2020
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.409093
Subject(s) - opos , materials science , optical parametric oscillator , optics , laser , energy conversion efficiency , wavelength , pulse duration , slope efficiency , optoelectronics , fiber laser , physics
A room-temperature highly efficient Tm:YAP laser pumped MgO:PPLN optical parametric oscillator operating at 3.87 µm near degeneracy is demonstrated. The pump source is an acousto-optical (AO) Q-switched Tm:YAP laser, which delivers a maximum output power of 6.17 W with a pulse duration of 45 ns and a repetition rate of 6 kHz. The temperature dependent wavelength tuning characteristics of the PPLN-OPO is investigated, and a maximum OPO output power of 1.2 W at around 3.87 µm is achieved at 35°C, corresponding to an optical-optical conversion efficiency of 19.4%. To the best of our knowledge, this is the maximum output power ever reported from 2 µm waveband laser pumped 3-5 µm MgO:PPLN OPOs.