External cavity-type of wavelength tunable semiconductor laser l

Details External cavity-type of wavelength tunable semiconductor laser l External cavity-type of wavelength tunable semiconductor laser l

1998-06-05

2000-02-15

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Tuning

372102, 372107, 372 92, H01S 310

Patent

active

060261005

ABSTRACT:
An external resonator type of wavelength tunable semiconductor laser light source comprises: a semiconductor laser provided with an anti-reflection film on one end facet thereof; a diffraction grating having a wavelength selection property, which is disposed in a side of the anti-reflection film of the semiconductor laser; and a wavelength tunable member for changing a position of the diffraction grating with respect to the semiconductor laser, to tune a wavelength of an oscillating light based on a movement of the diffraction grating, the wavelength tunable member comprises a supporting member a portion of which is fixed, a free arm of which supports the diffraction grating, and at least a part of which is an elastic body; a movement member for moving the supported diffraction grating by deforming the elastic body of the supporting member elastically; and a movement control member for controlling the amount of movement of the movement member.

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Boku, et al, "Ultra-narrowing of the Oscillation Linewidth from the External Cavity Diode Lasers", pp. 1-5.

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