A tunable dual-wavelength output slab laser

Abstract

This invention relates to the field of high-power solid-state lasers, and more particularly to a tunable dual-wavelength output slab laser, comprising a seed beam isolation and shaping module, a slab four-pass amplification module, and a tunable module. The transmission optical paths of the seed beam isolation and shaping module, the slab four-pass amplification module, and the tunable module are matched. The seed beam isolation and shaping module generates seed beam and shapes it into a rectangular spot that matches the slab four-pass amplification module. The shaped seed beam enters the slab four-pass amplification module for amplification, and the amplified seed beam enters the tunable resonant module for wavelength adjustment. This invention achieves high beam quality picosecond single-longitudinal-mode laser output with tunable repetition rate, energy, and wavelength. By using the slab four-pass amplification module to amplify the seed beam through four passes, the power and beam quality of the seed beam are effectively improved, and the influence of thermal lensing effect on the laser is reduced.

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