Solid laser device for simultaneously outputting red, yellow and green light and its laser generation method

Abstract

The invention discloses a solid laser facility with all-solid-state red, yellow, green three wavelength simultaneous output and a laser production method. The lasers of 1.3 mum wavelength and 1.0 mum wavelength are respectively divided into S polarization and P polarization by a polarization beam splitter using a Nd<3+>-doped laser crystal as working substance, the fundamental frequency lasers with different wavelengths and polarization directions respectively form oscillation in each relatively independent resonant cavity, which combines with nonlinear optics frequency translation technologyand acousto-optically Q-switched technology to realize the simultaneous output of red, green and yellow three wavelength quasi-continuous laser. The laser facility of the invention has advantages of convenient and flexible operation, full utilization of the fundamental frequency energy, high conversion efficiency, compact structure, low running cost, convenient and flexible adjustment and safe work, and is widely used in the field of laser medicine, laser color display, air monitoring, scientific experiment, astronomy, national defense and scientific research.

Description

Technical field [0001] The invention relates to a laser, in particular to a solid-state laser device capable of simultaneously outputting three wavelengths of red, yellow, and green, and three-wavelength visible laser light in a solid state 0.5 micron wavelength range green light, 0.5 micron wavelength range yellow light, and 0.6 micron wavelength range red light. Production method. Background technique [0002] Since the birth of the world’s first ruby ​​laser in 1960, various lasers and laser technologies have developed extremely rapidly. Among them, the development of multi-wavelength lasers has attracted much attention. Because it overcomes the shortcomings of traditional lasers that output a single wavelength, it has been used in laser medicine, Laser color display, laser full-color film, atmospheric monitoring and scientific experiment occupy an important position, and have theoretical research value and application value. There are related reports on the use of nonlinear o...

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Problems solved by technology

In the above two technologies, on the one hand, they cannot provide red, yellow, and green three-wavelength laser output simultaneously, and red, yellow, and green three-wavelength lasers can not only be used for laser demonstrations, but also one of the all-solid-state medical laser sources, namely It is the core equipment of all solid-state multi-wavelength laser eye fundus disease treatment equipment. Therefore, the development and design of this three-wavelength visible light laser has important practical application value; on the other hand, the optical fiber used in the former and the periodically polarized crystal used in the latter are very expensive. Moreover, the former uses extra-cavity frequency doubling and sum frequency technology. Compared with intracavity frequency doubling and sum frequency, the power density is low and the conversion efficiency is low, while the latter is used to generate yellow light at the sum frequency of 1064nm and 1319nm fundamental frequency light sources. In the same piece of gain medium Nd:YAG, in order to have a good power ratio and spatial coherence, the transmittance and coating of the resonant cavity mirror are required to be high, and the process is more complicated

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