Pulse laser sequence energy correction system and method

Abstract

The embodiment of the invention discloses a pulse laser sequence energy correction system and method. The pulse laser sequence energy correction system comprises a fundamental frequency light source,a control unit, an energy adjusting unit and a frequency doubling crystal. The fundamental frequency light source is used for outputting fundamental frequency pulse laser; the frequency doubling crystal is used for converting the fundamental frequency pulse laser into frequency doubling pulse laser; the energy adjusting unit is located between the fundamental frequency light source and the frequency doubling crystal; and the control unit is connected with the energy adjusting unit, an energy-time curve of the frequency doubling pulse laser is pre-stored in the control unit, and the control unit is used for controlling the energy adjusting unit to adjust the intensity of the fundamental frequency pulse laser incident to the frequency doubling crystal according to the energy-time curve, so that the energy of each pulse in the frequency doubling pulse laser is the same, wherein the energy-time curve is obtained when the energy adjusting unit is not operated. According to the technical scheme of the embodiment of the invention, the intensity of each pulse in the output pulse can be same, and the system has the advantages of simple structure, reliable devices, convenience in adjustmentand the like.

Description

technical field [0001] Embodiments of the present invention relate to laser technology, and in particular to a pulsed laser sequence energy correction system and method. Background technique [0002] Ordinary solid-state low repetition frequency (below 50Hz) pulse lasers have been widely used in medical, scientific research, industry and other fields due to their high single pulse energy. With the development of science and technology, more and more users have higher requirements for the repetition rate and wavelength of the laser, and the laser products with multi-wavelength and high repetition rate output are becoming more and more abundant. [0003] There is a problem in the existing multi-wavelength and high repetition frequency lasers. Due to the high repetition frequency of the fundamental frequency light, it has a heating effect on the frequency doubling crystal, which makes the frequency doubling efficiency of the frequency doubling crystal different in the cold stat...

AI Technical Summary

Problems solved by technology

[0003] There is a problem in the existing multi-wavelength and high repetition frequency lasers. Due to the high repetition frequency of the fundamental frequency light, it has a heating effect on the frequency doubling crystal, which makes the frequency doubling efficiency of the frequency doubling crystal different in the cold state and the hot state. When the high-frequency energy is first output and the energy is stable, the energy curve has a phenomenon of slowly rising or falling to a stable state, resulting in uneven intensity of the output pulse train.

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