Beam splitting device and method of linear polarization laser double-pulse of adjustable pulse space

Abstract

A light beam splitting device of linearly polarized laser dipulse type with pulse interval being able to be regulated consists of a Faraday light isolator, a passive Fabry-Perot resonantor with electro-optical crystal Pockels cell and a power supply of electro-optical crystal Pockels cell. The said device can device a linearly polarized laser pulse to be a dipulse with its interval and energy ratio both being able to be regulated and controlled. Its beam splitting method is also disclosed.

Description

technical field [0001] The present invention relates to laser, especially a kind of beam-splitting device and beam-splitting method of linearly polarized laser double pulse with adjustable pulse interval. ) is divided into double pulses with the same optical axis, propagation direction and polarization direction, and the pulse interval can be adjusted as required. Background technique [0002] In laser applications, it is often necessary to divide a linearly polarized laser pulse (referred to as "master pulse") into two sub-pulses with the same optical axis, propagation direction and polarization direction, and adjustable pulse interval and beam splitting ratio. [0003] In general, beam splitting is usually done using a combination of a beam splitter with an appropriate transmittance and a total reflection mirror. The beam splitting ratio of the beam splitter is fixed, and the beam splitter needs to be replaced for different beam splitting ratios; to obtain two beam splitt...

AI Technical Summary

Problems solved by technology

The beam splitting ratio of the beam splitter is fixed, and the beam splitter needs to be replaced for different beam splitting ratios; to obtain two beam splitters with the same optical axis, the same propagation direction and the same polarization direction, and the pulse interval and pulse energy ratio can be adjusted arbitrarily The sub-pulse, its adjustment work is complex and tedious, the stability of the beam splitting system is poor, and the whole beam splitting process will result in the loss of half of the energy of the mother pulse

[0004] In the existing technology, there is no beam splitting method with the same optical axis, the same propagation direction and the same polarization direction without losing half the energy of the mother pulse.

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