3 years ago

Multi-peak tunable CW orange laser based on single-pass sum frequency generation in step-chirped MgO: PPLN

Guang-Wei Li, Bao-Lu Tian, Wan-Guo Liang, Dismas K. Choge, Yi-Bin Xu, Huai-Xi Chen

Abstract

We report an all-solid-state tunable CW orange laser based on single-pass sum-frequency generation in step-chirped PPMgO: LN crystal. Two laser sources, a tunable laser (1550 nm) and an ASE laser (1525–1650 nm) are used interchangeably as pumps and mixed with a fixed 975 nm signal laser. Up to 4.3 mW at 597 nm is generated corresponding to 0.87% nonlinear conversion efficiency and the beam quality (M2) value of about 2.5 is measured. The output wavelength can be tuned up to ~ 5.66 nm by varying the position of focusing inside the crystal and by temperature, which makes possible the practical application of our device for wavelength selection and diversity in the orange spectral range.

Publisher URL: https://link.springer.com/article/10.1007/s11082-018-1454-8

DOI: 10.1007/s11082-018-1454-8

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