Mid-infrared Continuous-wave Optical Parametric Oscillator with a Fan-out Grating MgO:PPLN Operating Up to 5.3 μm

被引：1

作者：

Bae, In-Ho ^{[1
,2
]}

Yoo, Jae-Keun ^{[1
]}

Lim, Sun Do ^{[1
]}

Kim, Seung Kwan ^{[2
]}

Lee, Dong-Hoon ^{[1
,2
]}

机构：

[1] Korea Res Inst Stand & Sci, Div Phys Metrol, Daejeon 34113, South Korea

[2] Korea Res Inst Stand & Sci, Quantum Technol Inst, Daejeon 34113, South Korea

来源：

CURRENT OPTICS AND PHOTONICS | 2019年 / 3卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

Optical parametric oscillator; Mid-infrared laser; PPLN crystals; RESONANT PUMP; LASERS;

D O I：

10.3807/COPP.2019.3.6.577

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a continuous-wave (cw) optical parametric oscillator (OPO) optimized for mid-infrared emission above 5.0 mu m. The OPO is based on a magnesium-oxide-doped periodically poled LiNbO3 (MgO:PPLN) crystal with a fan-out grating design. A linear two-mirror cavity resonating both at the pump and signal wavelengths is stabilized to the pump laser by using the modified Pound-Drever-Hall (PDH) method. The idler wavelength is continuously tunable from 4.7 mu m up to 5.3 mu m by varying the poling period of the fan-out grating crystal. Pumped by a diode-pumped solid state (DPSS) laser with a power of 1.1 W at 1064 nm, the maximum idler output power is measured to be 5.3 mW at 4.8 mu m. The output power above 5.0 mu m is reduced to the hundreds of mu W level due to increased absorption in the crystal, but is stable and strong enough to be measured with a conventional detector.

引用

页码：577 / 582

页数：6

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