Optical: systems and elements – Optical amplifier
Reexamination Certificate
2007-07-17
2007-07-17
Hughes, Deandra M. (Department: 3663)
Optical: systems and elements
Optical amplifier
Reexamination Certificate
active
11233634
ABSTRACT:
In an optical amplifier, passively wavelength-stabilized pump diodes generate pumping light to excite a gain medium (e.g., rare-earth-ion doped optical fiber or solid-state optical amplifier) near an absorption peak of the gain medium. The gain medium amplifies a pulsed laser signal coupled into the gain medium to a high peak power with minimal non-linear distortion. The gain medium may include a portion configured to receive the pumping light and another portion configured to amplify the pulsed laser signal. A volume phase hologram device may passively wavelength stabilize the pump diodes by reflecting a portion of the pumping light back to the pump diodes. Passively wavelength-stabilizing the pump diodes improves power efficiency of the optical amplifier.
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Booth Timothy J.
Brennan, III James Francis
Carr & Ferrell LLP
Hughes Deandra M.
Raydiance, Inc.
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