Laser parameter integrated test system

A technology for comprehensive testing and laser parameters, applied in the field of comprehensive testing systems for laser parameters, it can solve problems such as increasing complexity, and achieve the effects of small spherical aberration and astigmatism, real-time measurement, and high equipment integration.

Inactive Publication Date: 2010-07-21
南京帝耐激光科技有限公司
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Problems solved by technology

The peak power density difference and optical path difference of each spot obtained by this method are related to the distance between two parallel plates and the sum of the incident angles of the laser beam entering the plate. It is ne...

Method used

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specific Embodiment

[0072] The plane mirror 1 has a wedge angle of 5° to prevent the reflected light from the rear surface of the plane mirror 1 from entering the test light path, and because the transmitted light is used, the mirror is not coated. The wedge angle of the wedge beamsplitter 3 is 3° and is not coated. The short focal length concave spherical mirror 4 and the long focal length concave spherical mirror 5 are coated with 99.9% high reflection film. The focal length of short focal length concave spherical reflector 4 is selected as 250mm (radius of curvature 500mm), and the focal length of long focal length concave spherical reflector 5 is selected as 1000mm (radius of curvature 2000mm), and the off-axis angle of long focal length concave spherical reflector (5) is 2°, the shortest distance from the second digital area array CCD camera 7 to the long focal length concave spherical mirror 5 is 850mm. Stepper motor 18 drives the second digital area array CCD camera 7 before the spot imag...

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Abstract

The invention relates to a laser parameter integrated test system, comprising a wedge spectroscope, a concave spherical reflector, a digital plane array charge coupled device (CCD) camera, a silicon photoelectric diode, a photoelectric detector, an energy probe, a spectrometer, an adjustable attenuator, a stepping motor and a computer with an acquisition card and a control card. A laser to be tested is incident upon the plane reflector; the monopulse energy, the pulse width, the repetition frequency and the wavelength of the laser beam are measured by means of the transmission light of the plane reflector; the wedge spectroscope splits the reflection light of the plane reflector into two beams, wherein one beam of laser is used for observing a near field laser spot, and the other beam of laser is used for measuring the M2 factor, the far field divergent angle, the beam waist diameter and the pointing stability of the laser beam. The laser parameter integrated test system can carry out integrating, precise and stable measurements on the monopulse energy, the wavelength, the pulse width, the repetition frequency, the M2 factor and the pointing stability of the laser beam.

Description

technical field [0001] The invention relates to the measurement of laser parameters, in particular to a comprehensive test system for laser parameters, which can measure laser single pulse energy, wavelength, pulse width, repetition frequency, M 2 Factor, far-field divergence angle, beam waist diameter and pointing stability are tested. Background technique [0002] To test the performance of the laser beam, the conventional practice is to use different test optical paths and measurement devices for different laser parameters: [0003] (1) The measurement of pulsed laser single pulse energy (or continuous laser power) uses a conventional pyroelectric energy (or power) meter. The pyroelectric detector has a wide spectral range and a high detection rate. It is suitable for Measurement of single pulse energy (or continuous laser power) of pulsed laser at room temperature; [0004] (2) The laser wavelength is measured by a common grating spectroscopic method, and the grating t...

Claims

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Application Information

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IPC IPC(8): G01J11/00G01J9/00
Inventor 侯霞杨静蕊陈卫标刘荣涛杨燕胡善江夏文兵
Owner 南京帝耐激光科技有限公司
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