Coherent light generators – Optical fiber laser
Reexamination Certificate
2005-09-06
2005-09-06
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Optical fiber laser
C372S032000
Reexamination Certificate
active
06940877
ABSTRACT:
A narrow-linewidth high-power single-frequency laser is realized by pumping a laser cavity with a pair of polarized single-mode pump lasers that are driven below their respective “micro-kink” regions and combined with a polarized beam combiner. The pump lasers emit at the same wavelength and include a length of polarization-maintaining (PM) fiber to maintain the polarization of the respective pumps. The laser cavity is selected from microchip, fiber and waveguide devices and is provided with optical feedback. This laser is capable of producing a stable high-power single-mode signal with a very narrow linewidth, e.g. less than 10 kHz and preferably less than 3 kHz.
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Geng Jihong
Hu Yongdan
Spiegelberg Christine
Gifford Eric A.
Harvey Minsun Oh
Nguyen Phillip
NP Photonics Inc.
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