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Online Monitoring and Adjusting Method for Misaligned Gratings of Optical Pulse Compressor
Zhongguo Jiguang/Chinese Journal of Lasers
When measuring the oil concentration lower than 10 mg/L in reinjection water based on ultraviolet fluorescence method, high thermal power of the light source will reduce the accuracy of measurement results. To reduce the thermal power of light source, pulse modulation dimming method (duty ratio less than 50%) was proposed to replace square-wave modulation dimming method (duty ratio equal to 50%). Two noise analysis models for pulse modulation and square-wave modulation dimming method weredoi:10.3788/cjl201643.0801002 fatcat:qxrf3ggs45hmjeb3co7z32goem