Coherent light generators – Particular beam control device – Tuning
Patent
1999-06-29
2000-08-22
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Tuning
372107, 372 19, 372 99, 372 92, H01S 310
Patent
active
061083550
ABSTRACT:
The present invention provides an external cavity laser that has wide-range continuous tuning and is compatible with a compact, robust, inexpensive form factor. In an embodiment of the invention a tunable external cavity laser is disclosed. The laser includes a laser amplifier, a retroreflector, a first and second reflector and a translator. The retroreflector is located in a path of the beam provided by the laser amplifier. The first and second reflectors are positioned opposite one another and in the path of the beam between the laser amplifier and the retroreflector. The translator translates at least one of said first reflector and said second reflector to vary the separation between the reflectors along the path of the beam, thereby tuning the laser amplifier. In another embodiment of the invention a method for adjusting wavelength in an optical device is disclosed. The method comprises the act of translating at least one of the first and the second reflective surfaces to vary a separation between the reflectors along the path of a beam emitted by the laser amplifier to tune the laser.
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Zhang et al., "An Interference Filter Based External Cavity Laser For Dense Wavelength Division Multiplexing Applications", Technical Proceedings, vol. 1, National Fiber Optics Engineers Conference, Sep. 13-17, 1998.
Cary Charles C.
Jr. Leon Scott
New Focus Inc.
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