High-repetition-frequency laser beam splitting synchronous precise attenuator

Abstract

The invention discloses a high-repetition-frequency laser beam splitting synchronous precise attenuator. The attenuator comprises a first polarization and beam splitting prism, a first-path attenuation unit, a second-path attenuation unit and a second polarization and beam splitting prism, wherein the first polarization and beam splitting prism is used for splitting an incident high-repetition-frequency laser into first linearly polarized light and second linearly polarized light, and the polarization state of the first linearly polarized light is perpendicular to the polarization state of thesecond linearly polarized light; the first-path attenuation unit is used for attenuating the first linearly polarized light; the second-path attenuation unit is used for attenuating the second linearly polarized light; and the second polarization and beam splitting prism is used for merging the attenuated first linearly polarized light and second linearly polarized light to obtain an attenuated high-repetition-frequency laser. Through the high-repetition-frequency laser beam splitting synchronous precise attenuator, the attenuated high-repetition-frequency laser can be obtained through polarization and beam splitting of the high-repetition-frequency laser, synchronous attenuation on the two laser beams with good polarization characteristics after beam splitting and merging of the beams sequentially. In this way, dynamic high-precision attenuation control over the high-repetition-frequency laser can be realized, energy transmittance is high, and the demand for a semi-physical simulation test on the high-repetition-frequency laser can be met.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a high-repetition-frequency laser beam splitting synchronous precision attenuator. Background technique [0002] High-repetition-frequency lasers have the characteristics of uncertain polarization characteristics. In the simulation experiments that require high-repetition-frequency lasers to participate, absorption-type attenuation is often used for energy control. However, due to the limitation of the laser damage threshold of absorbing materials, this type of attenuation The incident and outgoing laser energies are low, and it is difficult to meet the simulation test requirements of high-power lasers. The traditional polarization attenuation scheme has good attenuation performance for the repetition frequency laser with good polarization characteristics. However, due to the unstable polarization characteristics of the high repetition frequency laser, it is difficult to ...

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Problems solved by technology

[0002] High-repetition-frequency lasers have the characteristics of uncertain polarization characteristics. In the simulation experiments that require high-repetition-frequency lasers to participate, absorption-type attenuation is often used for energy control. However, due to the limitation of the laser damage threshold of absorbing materials, this type of attenuation The incident and outgoing laser energies are low, and it is difficult to meet the simulation test requirements of high-power lasers

The traditional polarization attenuation scheme has good attenuation performance for the repetition frequency laser with good polarization characteristics. However, due to the unstable polarization characteristics of the high repetition frequency laser, it is difficult to achieve laser attenuation accuracy by using the traditional polarization attenuation scheme. Require

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