T/GDCKCJH 022-2020 Determination Methods for the Main Parameters of Ultra-Short Pulse Fiber Lasers

Scope

Scope: This standard specifies the terms and definitions, test conditions and requirements, and test methods related to the measurement of the main parameters of ultra-short pulse fiber lasers. This standard is applicable to the measurement of the main parameters of ultra-short pulse fiber lasers. Main technical content: The direct test method with a spectrometer is used to directly test the peak wavelength and spectral bandwidth of the laser. The direct test method with a laser power meter is used to directly test the output power and output power repeatability of the laser. The direct measurement method based on an oscilloscope can measure the pulse repetition frequency and the repetition of the pulse repetition frequency. The direct measurement method based on a spectrum analyzer can measure the pulse repetition frequency, the repetition of the pulse repetition frequency, and the peak signal-to-noise ratio of the fundamental frequency, which is an important parameter for evaluating the performance of high-repetition-rate mode-locked lasers. The pulse energy is obtained based on the measured output power and pulse repetition frequency. The interference/intensity autocorrelation curve of the laser pulse is obtained using a pulse autocorrelation signal tester, and the pulse width is calculated based on the obtained autocorrelation curve half-width at half-maximum and the deconvolution factor. This test method can be applied to the measurement of ultra-short pulses at the picosecond and femtosecond level, and improves the method of measuring the pulse width only with an oscilloscope. Based on the measured pulse width and pulse energy, the peak power of the pulse is calculated when the laser is in the soliton mode-locked state. The influence of the pulse line shape on the results is specifically considered, and the calculation formula is improved.

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