Semiconductor laser for 50: 50 split optical fiber coupling output, and method
A fiber coupling and semiconductor technology, applied in the field of lasers, can solve the problems that the position deviation of the coupler is easy to affect the coupling efficiency and the beam quality, and limit the application, so as to improve the accuracy of data, increase the stability and reliability, and optimize the coupling efficiency. Effect
Pending Publication Date: 2021-07-23
THE FIRST RES INST OF MIN OF PUBLIC SECURITY +1
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The invention discloses a semiconductor laser for 50: 50 split optical fiber coupling output and a method. According to the invention, an included angle between the center line of the transmitting end of a pumping laser generator and the end face of a semiconductor gain chip is 45 degrees, and a focusing lens is located between the transmitting end of the pumping laser generator and the semiconductor gain chip; an output coupling mirror is opposite to an output window area of the semiconductor gain chip, a frequency doubling crystal is located on a reflection light path of the output coupling mirror, and an end mirror is opposite to an emergent end of the frequency doubling crystal; a coupling lens is positioned between the emergent end of the output coupling mirror and the input end of a split optical fiber; and the input end of the split optical fiber is connected with a first output end of the split optical fiber and a second output end of the split optical fiber through an optical fiber splitter. According to the invention, intensity calibration can be carried out in a fluorescence spectrum and a Raman spectrum of genetic spectroscopy analysis, data accuracy is improved, and the complexity of a spatial spectroscopic optical path of a test system is simplified.
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