Solid-state laser with dual-composite-resonant-cavity structure and tunable wavelength

Abstract

The invention discloses a solid-state laser with a dual-composite-resonant-cavity structure and tunable wavelength. The laser enables unpolarized 1064.2nm simulated radiation fluorescence generated by Nd:YAG crystals to pass through a first resonant cavity and a second resonant cavity to realize s-polarized 1064.2nm pumped laser and p-polarized 1064.2nm fundamental frequency light oscillation respectively; the s-polarized 1064.2nm pumped laser pumps a third resonant cavity to generate s-polarized signal light with tunable wavelength and middle-infrared band s-polarized idler frequency light; and the s-polarized signal light with tunable wavelength and the p-polarized 1064.2nm fundamental frequency light perform sum-frequency mixing to form s-polarized sum-frequency laser with tunable orange red band wavelength. By adoption of the laser disclosed by the invention, wavelength-turnable and high-power laser output at the orange red band and the middle-infrared band can be realized at the same time; and the laser is compact in structure, high in energy conversion efficiency, and can be widely applied to the fields of biomedicine, laser measurement, pollution monitoring, spectral analysis and the like.

Description

technical field [0001] The present disclosure relates to the field of laser technology, in particular to a wavelength-tunable solid-state laser with a dual composite resonator structure. Background technique [0002] 600nm-650nm orange-red band laser has a wide range of applications in biomedicine, laser measurement, laser display, laser printing, pollution monitoring, spectral analysis and other fields. [0003] The early orange-red 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 highly toxic substances. [0004] With the development of semiconductor laser technology, in recent years, Raman frequency shift, blue laser pumping Pb-doped 3+ Crystal, semiconductor laser pumped Nd-doped 3+ Intracavity sum-frequency, semiconductor laser pumped Nd 3+ The technology of obtaining orange-red laser light by frequency doubling in crystal cavity has become a research hotspot. How...

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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 pr

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