A 117-W 1.66-Times Diffraction Limited Continuous-Wave Nd:YVO4 Zigzag Slab Laser with Multilayer Amplified-Spontaneous-Emission Absorbing Coatings.

Authors :: Zhang, Zhi-Feng
Li, Shuai
Li, Yang
Kou, Yang
Liu, Ke
Lin, Yan-Yong
Yuan, Lei
Xu, Yi-Ting
Peng, Qin-Jun
Xu, Zu-Yan
Source :: Chinese Physics Letters; Jun2020, Vol. 37 Issue 6, p1-4, 4p
Publication Year :: 2020
Abstract: We report a continuous-wave end-pumped Nd:YVO<subscript>4</subscript> zigzag slab laser with multilayer amplified spontaneous emission (ASE) absorbing coatings. The coatings are deposited on the slab faces. A five-layer structure consists of SiO<subscript>2</subscript>-Ti-SiO<subscript>2</subscript>-Ti-Au, and the thicknesses are 2520 nm, 10 nm, 160 nm, 24 nm and 200 nm, respectively. The designed coatings show good performance for the ASE control in the experimental tests. A stable-unstable hybrid laser oscillator along orthogonal directions in the slab aperture is further configured, achieving the 117W output at a pump of 328 W. The beam quality factors M<superscript>2</superscript> in the unstable direction and stable direction are 1.57 and 1.66, respectively. [ABSTRACT FROM AUTHOR]

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