Coherent light generators – Particular beam control device – Q-switch
Reexamination Certificate
2006-10-31
2006-10-31
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular beam control device
Q-switch
C372S014000, C372S006000
Reexamination Certificate
active
07130319
ABSTRACT:
An all-fiber Q-switched laser includes a gain fiber spliced between narrowband and broadband fiber gratings that define a polarization-dependent resonant cavity. The narrowband grating is, for example, formed in a PM fiber to create a polarization-dependent reflection band. A modulator applies stress to the fiber chain to induce birefringence and switch the cavity Q-factor to alternately store energy in the gain fiber and then release the energy in a laser pulse.
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Geng Jihong
Hu Yongdan
Kaneda Yushi
Spiegelberg Christine
Gifford Eric A.
Harvey Minsun Oh
NP Photonics Inc.
Roy Tod T. Van
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