A 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 includes a fundamental frequency light source, a control unit, an energy adjustment unit and a frequency doubling crystal; the fundamental frequency light source is used to output the fundamental frequency pulsed laser, and the frequency doubling crystal is used to convert the fundamental frequency pulsed laser into a frequency doubled pulsed laser; The energy adjustment unit is located between the fundamental frequency light source and the frequency doubling crystal; the control unit is connected to the energy adjustment unit, and the control unit pre-stores the energy-time curve of the frequency-doubling pulse laser, and the control unit is used to control the adjustment of the energy adjustment unit according to the energy-time curve The intensity of the fundamental frequency pulsed laser incident on the frequency doubling crystal, so that the energy of each pulse in the frequency doubling pulsed laser is the same; wherein, the energy-time curve is obtained when the energy adjustment unit is not running. The technical solution of the embodiment of the present invention can realize the same intensity of each pulse in the output pulse, and has the advantages of simple structure, reliable device, convenient adjustment and 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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