Optimum wavelength configuration device of wavelength variable semiconductor laser
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机译：波长可变半导体激光器的最佳波长配置装置
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(57) Abstract Objective Regarding to the wavelength variable semiconductor laser, the external resonatorLongitudinal mode and semiconductor laser specific longitudinal mode phase matsuchingu it does. Constitution The optical power measurement circuit which possesses the photodetector, LDJointing to the Drive circuit, to form automatic optical power control means, thisWith LD Drive circuit and semiconductor laser LD electric current measurement timeThe path is laid out. Attendant upon the revolution of the band pass filter LThe Drive electric current ripple mark which is displayed in the D electric current measurement circuit changesWhen, reaching the minimum, the band pass filter stoppingStopping it does. Or, in semiconductor laser Peltier component and the like takingAttaching, temperature to control this semiconductor laser, LD electric current measurementWhen the Drive electric current which is displayed in the circuit reaches minimum, temperatureIt maintains. Advantages Simply and securely longitudinal mode of external resonator half derivedIt to be possible to make the specific longitudinal mode of the body laser coincide, reza oscillation wavelength can be configurated optimumly.
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