Laser spectral measuring method

Abstract

The invention discloses a method to measure laser spectrum. Its steps are: (1) Send all laser-beam with laser spectrum information into light splitter to split. (2) Send beam achieved in (1) to lightfilter with different band. (3) Detect light power of different central wavelength by light signal detector simultaneously and processed by computer to get laser-beam. When detecting impulse laser-beam, generate electric timing impulse and set testing system for controlling light impulse timing measurement. It is a testing method with whole spectrum, which injects all laser-beam onto electrophotonic detector with multi wavelength-channel simultaneously and detector achieves laser spectrum of the whole testing wavelength range. It is more convenient than wavelength scanning in existed techniqueand can measure all spectrums simultaneously.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to the measurement of laser spectrum, including a continuous laser spectrum measurement method and a pulsed laser spectrum measurement method. Background technique [0002] The laser spectrum characteristic is an important parameter reflecting the optical characteristics of continuous laser or pulsed laser. In the prior art, the measurement of laser spectrum is generally a wavelength scanning method. [0003] The wavelength scanning method means that the wavelength scanning can only measure the spectral power at one wavelength at a time. It requires that the test light source must be stable during the test process. By scanning and measuring the power spectrum at different wavelengths one by one, the entire laser spectrum can be obtained. Such as figure 1 As shown, it is the principle block diagram of continuous laser spectrum and pulsed laser spectrum wavelength scanning method meas...

AI Technical Summary

Problems solved by technology

The characteristic of the wavelength scanning method is that the technology is relatively mature. At present, many spectrum analyzers are products of this type of technology. The disadvantage is that it cannot measure the laser spectrum at every moment simultaneously.

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