| 摘要 |
A tunable semiconductor laser apparatus with an external resonator includes: a semiconductor laser device having a first end face and a second end face, the second end face being coated with an antireflection film; an optical device for collimating light emitted from the second end face; a reflecting device for reflecting the collimated light, the reflecting device and the first end face constituting an external resonator; a tunable device located between the optical device and the reflecting device; and a driving mechanism for angularly displacing the tunable device to control incidence angle of light onto the tunable device, wherein the driving mechanism includes a micro-machine actuator, thereby shortening the length of the external resonator, yet providing a wide tunable range, reducing the size of the apparatus while achieving excellent mass-productivity.
|
