T/GDCKCJH 021-2020 Active Group standards

T/GDCKCJH 021-2020 Determination Methods for the Main Parameters of Single-frequency Fiber Lasers

T/GDCKCJH 021-2020

Publish Date: 2020-08-18 Implement Date: 2020-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GDCKCJH 021-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Laser devices

ICS Name: Optoelectronics, laser equipment

Publish Date: 2020-08-18

Implement Date: 2020-10-01

Scope

Scope: This standard specifies the terms and definitions, test conditions and requirements, and test methods related to the determination of the main parameters of single-frequency fiber lasers. This standard applies to the determination of the main parameters of single-frequency fiber lasers; Main technical content: 1. F-P cavity swept-frequency method: Directly detects the single-longitudinal mode characteristics of the laser using a Fabry–Pérot scanning interferometer. 2. Laser power meter direct test method: Directly tests the output power and output power fluctuations of the laser. 3. Laser wavelength meter direct test method: Directly tests the wavelength of the laser. 4. Spectrum analyzer-based direct measurement method: Measures the intensity noise of single-frequency fiber lasers. By converting the laser signal into an electrical signal using a photoelectric detector and inputting the electrical signal into a spectrum analyzer to measure its noise voltage in the frequency domain, and simultaneously measuring the DC voltage of the electrical signal with a digital multimeter, the relative intensity noise of the laser can be obtained. 5. Optical phase demodulator combined with phase generation carrier (PGC) technology based on unbalanced Michelson fiber interferometers: Measures the frequency noise of single-frequency fiber lasers. When the laser signal passes through the unbalanced interferometer, the fluctuation of the optical frequency causes a change in the phase, which is converted into a change in the intensity of the output light field of the interferometer. The output signal of the interferometer is converted into an electrical signal by a photoelectric detector and demodulated by the phase demodulator based on the PGC scheme. The demodulated interference phase term is the phase noise of the laser and the demodulated interference system. The demodulation results are analyzed by a spectrum analyzer. 6. Time-delay self-heterodyne method base