Monoblock crystal cavity blue light frequency multiplier

Abstract

The invention relates to design, construction, temperature control and frequency conversion technologies of a blue light laser frequency multiplier, and particularly relates to a monoblock crystal cavity blue light frequency multiplier. The monoblock crystal cavity blue light frequency multiplier can solve demand of photoelectric engineering technologies, optical information and optics frontier scientific research for a blue light laser, and effectively overcomes defects that output results are affected by great loss and unstable cavity length of a separated or semi-separated frequency multiplication cavity at present and that an existing frequency multiplication temperature control device is unstable in time delay and temperature. Stable continuous frequency multiplication blue light output can be acquired through the monoblock crystal cavity blue light frequency multiplier. The design of a balance temperature control structure provided by the invention is conducive to keeping constant crystal cavity temperature, thereby being capable of simultaneously realizing phase matching and cavity resonance accurately. The monoblock crystal cavity blue light frequency multiplier can be widely applied to the process of nonlinear frequency conversion.

Description

technical field [0001] The invention relates to the design, construction, temperature control and frequency conversion technology of a blue light laser frequency doubling device, in particular to a blue light frequency doubler with a monolithic crystal cavity. Background technique [0002] Blue short-wavelength lasers have broad application prospects in submarine optical communications, ocean exploration, optical disc reading and writing, optical information processing, laser printing, and laser medical treatment. In addition, they can also be used to capture and damp thermal vibrations of cesium atoms to achieve laser cold. However, in the development of semiconductor lasers in recent decades, their output wavelengths are mainly in the near-infrared or mid-to-far infrared bands, and there are still some constraints in terms of operating life, output power, and beam quality in terms of short wavelengths. The use of nonlinear crystal frequency doubling is an important means ...

AI Technical Summary

Problems solved by technology

At present, at home and abroad, the separated or semi-separated cavity structure is usually used to perform the frequency doubling process to obtain the frequency doubling blue light output (document E.S.Polzik and H.J.Kimble, "Frequency doubling with KNbO 3 in an external cavity,"Opt.Lett.16(18),1400–1402(1991)), including: annular cavity and semi-integral cavity, this type of cavity structure is easy to adjust, but the loss of the inner cavity is large due to the separation element, The disadvantage of poor stability requires an external auxiliary locking system to maintain long-term operation, which is very susceptible to external interference and it is difficult to ensure long-term operation

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