Coherent light generators – Particular beam control device – Control of pulse characteristics
Patent
1994-09-29
1997-05-27
Bovernick, Rodney B.
Coherent light generators
Particular beam control device
Control of pulse characteristics
H01S 310
Patent
active
056338856
ABSTRACT:
A method of, and apparatus for controlling and compensating for high order frequency chirp in a fast tuned laser. Optical means in the form of chirped Bragg gratings, preferrably in-fiber gratings, are used to compensate for one or more orders of the frequency chirp. Alternatively, or in combination with the optical compensation, an electrical compensation scheme employs integrators in one or more parallel compensation channels to create a composite compensation signal to compensate for specific order nonlinearities. The present invention allows for the generation of shorter bandwidth-limited optical pulses with spectra containing the complete tuning range of the tunable laser.
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Galvanauskas Almantas
Harter Donald J.
Bovernick Rodney B.
Imra America Inc.
Wise Robert E.
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