Linear polarization high-repetition-frequency femtosecond laser based on photoetching multimode optical fiber and detection system of linear polarization high-repetition-frequency femtosecond laser

• Main Authors: SONG JIAZHENG, LIU YUANSHAN, ZHANG YANYAN, LI XUELONG
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• Subjects: BASIC ELECTRIC ELEMENTS; COLORIMETRY; DEVICES USING STIMULATED EMISSION; ELECTRICITY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The linear polarization high repetition frequency femtosecond laser comprises a pump light source, a polarization-maintaining wavelength division multiplexer and a resonant cavity, and the polarization-maintaining wavelength division multiplexer is connected with the pump light source and the resonant cavity through a first polarization-maintaining optical fiber and a second polarization-maintaining optical fiber respectively. The resonant cavity comprises a first reflector, a second reflector and an excitation part, the excitation part comprises an excitation unit and a functional unit, one end of the excitation unit is connected with the first reflector, the other end is connected with the functional unit, and one end of the functional unit away from the excitation unit is connected with the second reflector; the pump light source is used for emitting pump light, the pump light enters the resonant cavity after respectively passing through the first polarization-maintaining optical fiber, the polarization-ma