TUNABLE LASER SOURCE AND METHOD FOR PREVENTING THE APPEARANCE OF THE FASHION INSTABILITY PHENOMENON IN SUCH A SOURCE

摘要

P A tunable laser source enabling the wavelength of the output light to be continuously varied, by modifying the length of an external resonator of a semiconductor laser light source section of the external resonator type, has a laser diode current control section (85) for controlling the excitation current supplied to a laser diode (1) acting as a section for modifying the length of the external resonator to prevent the occurrence the mode instability phenomenon, which occurs due to continuous variations in the wavelength of the output light. /P