Techonologycal Of High-Power Fiber Coupling LD

The technology of high-power fiber coupling LD, which serves as its key technique, gets an extensive concern. The dissertation mainly did research and analysis on the methods of coupling laser beam from high power semiconductor laser diode with fiber. Aiming at different coupling methods, lots of researches have been done.Under guidance of by theory of beam transmission in fiber, a fiber coupling experiment has realized coupling efficiency 87%, wavelength 808nm, output power 2W.A new idea on wedge-fiber has been put forward in application of semiconductor fiber coupling. By measuring cutting angle and cutting depth and analyzing the influence of angle and depth to coupling, the output power from fiber is 5.4W and coupling efficiency is 75%. Then an optimization scheme has been put forward considering the two factors, and the research direction has been confirmed.