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

A pulse interval and double pulse technology, applied in the laser field, can solve the problems of poor stability of the beam splitting system, complicated adjustment work, loss of mother pulse energy, etc., and achieve the effect of easy control, small space occupation, and precise adjustment

Inactive Publication Date: 2007-07-18
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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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

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

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0055] Please refer to Fig. 1 and Fig. 2 first, Fig. 1 is the structural representation of the beam splitting device of the linearly polarized laser double pulse with adjustable pulse interval of the present invention, Fig. 2 is the electro-optic crystal in the passive Fabry-Perot cavity The block diagram of the circuit structure applying the pulse voltage on the two electrodes of the Pockels cell, as can be seen from the figure, the composition of the beam splitting device of the linearly polarized laser double pulse with adjustable pulse interval of the present invention is to be arranged successively on the same optical axis: The first polarizer 2, the Faraday rotator 3, the second polarizer 4, the electro-optic crystal Pockels cell 5 and the first total reflection mirror...

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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...

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Application Information

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IPC IPC(8): G02B27/10H01S3/00H01S5/00
Inventor 冯伟伟林礼煌王文耀张秉钧
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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