Low Threshold and High Conversion Efficiency Nanosecond Mid-Infrared KTA OPO

Based on a Type II non-critically phase-matched KTA crystal, a low-threshold and high conversion efficiency mid-infrared optical parametric oscillator （OPO） pumped by a diode-end-pumped Nd：YVO4 laser is demonstrated. The OPO threshold is only 0.825W. The maximum output power of 435mW at 3.47μm is ac...

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Bibliographic Details
Published in:Chinese physics letters 2009-12, Vol.26 (12), p.149-152
Main Author: 钟凯 李建松 崔海霞 徐德刚 王与烨 周睿 汪静丽 王鹏 姚建铨
Format: Article
Language:English
Subjects:
Conversion
Crystals
Lasers
Nanocomposites
Nanomaterials
Nanostructure
Nd：YVO4
Photons
Thresholds
中红外光参量振荡器
二极管泵浦
光转换效率
最大输出功率
红外线
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Summary:Based on a Type II non-critically phase-matched KTA crystal, a low-threshold and high conversion efficiency mid-infrared optical parametric oscillator （OPO） pumped by a diode-end-pumped Nd：YVO4 laser is demonstrated. The OPO threshold is only 0.825W. The maximum output power of 435mW at 3.47μm is achieved with the repetition rate of 30kHz, corresponding to an optical-to-optical conversion efficiency of 4.4%. The photon conversion efficiency is as high as about 64%. The pulse width is 3.5ns with a peak power of 4kW for the maximum output power.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/26/12/124213