Output characteristics of Nd:GdVO4 crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers

Hai-feng Lin; Fei-bing Xiong; Jian-ping Huang

doi:10.1007/s11801-015-4163-6

Optoelectronics Letters ›› : 30 -32. DOI: 10.1007/s11801-015-4163-6

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Output characteristics of Nd:GdVO₄ crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers

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Abstract

The output characteristics of neodymium-doped gadolinium vanadate (Nd:GdVO₄) crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers are investigated. With two 1 W semiconductor diode lasers pumping, the output power of TEM₀₀ laser is 920 mW, and the optical conversion efficiency is close to 46%. By changing the relative orientations of both Nd:GdVO₄ crystals, the polarization characteristics of laser are varied. In particular, by keeping the c-axes of two Nd:GdVO₄ crystals orthogonal to each other and adjusting two diode pump lasers to operate at the same power level, the completely unpolarized light is obtained.

Keywords

Pump Power / Crystal Laser / Absorb Pump Power / Quarter Wave Plate / GdVO4

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Hai-feng Lin,Fei-bing Xiong,Jian-ping Huang. Output characteristics of Nd:GdVO₄ crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers. Optoelectronics Letters 30-32 DOI:10.1007/s11801-015-4163-6