A wavelength-tunable solid-state laser with dual composite resonator structure

Abstract

The present disclosure discloses a wavelength-tunable solid-state laser with a dual composite resonant cavity structure. The laser uses the non-polarized 1064.2nm stimulated emission fluorescence generated by the Nd:YAG crystal to achieve s-through the first resonant cavity and the second resonant cavity respectively. Polarized 1064.2nm pump laser and p-polarized 1064.2nm fundamental frequency optical oscillation. The s-polarized 1064.2nm pump laser pumps the third resonant cavity to generate s-polarized signal light and s-polarized idler light in the mid-infrared band, and the wavelength tunable s-polarized signal light and p-polarized 1064.2 nm fundamental frequency light and frequency form an s-polarized sum-frequency laser with tunable wavelength in the orange-red band. The disclosed laser can realize wavelength-tunable and high-power laser output simultaneously in the orange-red band and the mid-infrared band, has a compact structure and high energy conversion efficiency, and can be widely used in fields such as biomedicine, laser measurement, pollution monitoring, and spectral analysis.

Description

technical field [0001] The disclosure relates to the field of laser technology, in particular to a wavelength-tunable solid-state laser with a double compound resonant cavity structure. Background technique [0002] The 600nm-650nm orange-red band laser has a wide range of applications in the fields of biomedicine, laser measurement, laser display, laser printing, pollution monitoring, and spectral analysis. [0003] Early orange-red band lasers were mostly gas and liquid dye lasers, which limited their practical application due to factors such as low output power, short service life, and containing highly toxic substances. [0004] With the development of semiconductor laser technology, Raman frequency shift, blue laser pumping Pb-doped 3+ Crystal, semiconductor laser pumping Nd doped 3+ Sum frequency in crystal cavity, semiconductor laser pumping Nd 3+ The technology of obtaining orange-red band laser such as frequency doubling in the crystal cavity has become a researc...

AI Technical Summary

Problems solved by technology

However, in this type of research, the pumping laser of the optical parametric oscillator simultaneously assumes the two roles of pumping the optical parametric oscillator and participating in the intracavity sum-frequency process, which disperses its power, thereby reducing the intracavity signal optical power. Density, resulting in low output power of the wavelength tunable orange-red band laser, and the wavelength tuning range is also limited

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