Novel dual-wavelength laser frequency doubling device

Abstract

The present invention relates to a novel device of dual wavelength laser frequency doubling. The corresponding phase matching angles of the laser of different wavelength are different in nonlinear optical crystal, which is a problem necessitating consideration when designing a device which can realize simultaneous frequency doubling to dual wavelength laser. By means of geometric calculation and cutting shape design, a device which can realize simultaneous frequency doubling to dual wavelength laser is acquired. The laser of dual wavelength is made to transmit alongside the phase matching direction of the laser of one wavelength to generate the frequency doubled light of the wavelength. When reaching the end face of crystal the laser bundle is shifted to travel along the phase matching direction of the laser of the other wavelength by reflection, thus acquiring the frequency doubled light of corresponding wavelength.

Description

technical field [0001] The invention relates to a laser frequency doubling device. Background technique [0002] Various types of laser frequency doubling devices are widely used in the field of nonlinear optics, which effectively expands the application range of lasers. The vast majority of laser frequency doubling devices are made of nonlinear optical crystals. In order to achieve a better laser frequency doubling effect, it is usually necessary to make the laser propagate along its corresponding phase matching direction in the crystal, so the nonlinear optical conversion It is limited by phase matching conditions, angle tolerance, temperature tolerance angle, and beam quality. Based on many design considerations, most laser frequency doubling devices today are only for specific wavelengths. Generally, they can only achieve frequency doubling of single-wavelength lasers, and cannot obtain simultaneous frequency doubling of dual-wavelength lasers. With the rapid developme...

AI Technical Summary

Problems solved by technology

The vast majority of laser frequency doubling devices are made of nonlinear optical crystals. In order to achieve a better laser frequency doubling effect, it is usually necessary to make the laser propagate along its corresponding phase matching direction in the crystal, so the nonlinear optical conversion Limited by phase matching conditions, angle tolerance, temperature tolerance angle and beam quality, etc.

Based on many design considerations, most laser frequency doubling devices today are only for specific wavelengths. Generally, they can only achieve frequency doubling of single-wavelength lasers, and cannot obtain simultaneous frequency doubling of dual-wavelength lasers.

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