A High Repetition Frequency Laser Splitting Synchronous Precision Attenuator

Abstract

The present application discloses a high-repetition-frequency laser beam splitting synchronous precision attenuator, comprising: a first polarization beam-splitting prism, which is used to split the incident high-repetition-frequency laser light into a first linearly polarized light and a second linearly polarized light whose polarization states are perpendicular to each other; The first attenuation unit is used to attenuate the first linearly polarized light; the second attenuation unit is used to attenuate the second linearly polarized light; the second polarization beam splitter is used to attenuate the attenuated first linearly polarized light Combining with the second linearly polarized light to obtain attenuated high repetition rate laser light. The high-repetition-frequency laser splitting synchronous precision attenuator provided by this application can split the polarization of the high-repetition-frequency laser, and then perform synchronous attenuation on the two laser beams with better polarization characteristics after splitting, and then combine the beams to obtain The attenuated high-repetition-frequency laser can realize the dynamic and high-precision attenuation control of the high-repetition-frequency laser, and the energy transmittance is high, which can meet the requirements of the semi-physical simulation test of the high-repetition-frequency laser.

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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