Method and device for measuring optical power parameters on basis of crystal resonator

Abstract

The invention discloses a method and a device for measuring optical power parameters on the basis of a crystal resonator. The device comprises the crystal resonator, an oscillation starting circuit and a frequency measuring unit. An input end of the oscillation starting circuit is connected with an electrode of the crystal resonator, an output end of the oscillation starting circuit is electrically connected with the frequency measuring unit, and to-be-measured light beams are incident on a working surface of the crystal resonator. The method and the device for measuring the optical power parameters have the advantages that incident laser light is effectively reflected during application of the method and the device, the requirement on the laser irradiation bearing ability of a measuring system can be lowered, the method and the device can be used for measuring the high-energy laser parameters under long-time emergent conditions, power of the laser light can be converted into frequencies to be measured during implementation, the method and the device are high in measurement precision and resolution by the aid of a modern frequency measuring technology, requirements on measuring parameters of laser light under different power conditions can be met, the method and the device are high in applicability, wide in dynamic range and simple in engineering, the device is compact in structure, and the like.

Description

technical field [0001] The invention relates to a method and device for measuring optical power parameters, in particular to a method and device for measuring high-energy laser power parameters based on a crystal resonator. Background technique [0002] High-energy lasers refer to lasers with an average power greater than 10,000 watts, a duration of more than several seconds, and an output energy of more than tens of thousands of joules. They have important industrial and military application prospects. At present, the measurement method of high-energy laser power is mainly the photoelectric detection method. The laser is incident on the attenuation unit such as the integrating sphere and the optical attenuation film, and then the laser is incident on the surface of the photodetector after the light intensity is attenuated by a large multiple. By measuring the output signal and the attenuation coefficient value, we can get The power value of the laser. The problem with this...

AI Technical Summary

Problems solved by technology

The problem with this method is that for high-energy and high-power lasers, a large multiple of light intensity attenuation is required, so the attenuation coefficient of the attenuator needs to be accurately calibrated, resulting in a large measurement uncertainty

This method has a weak displacement signal caused by light pressure in the application, so it puts forward higher requirements on the accuracy and resolution of the displacement sensor, which limits the application of this method

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