Coherent light generators – Particular resonant cavity – Distributed feedback
Reexamination Certificate
2005-05-03
2005-05-03
Leung, Quyen (Department: 2828)
Coherent light generators
Particular resonant cavity
Distributed feedback
C372S050121
Reexamination Certificate
active
06888874
ABSTRACT:
A laser diode system is provided. The laser comprises first and second reflective gratings at each end of the laser. The laser further comprises an outcoupling grating between the first and second reflective gratings, wherein the outcoupling grating couples light out of the laser. The reflectors and outcoupling grating each have a unique wide-band reflective spectrum. A first laser cavity exists between the first and second reflective gratings. A second laser cavity exists between the first reflective grating and the outcoupling grating. A third laser cavity exists between the second reflective grating and the outcoupling grating, and a fourth laser cavity exists with in the outcoupling region. The overlap of reflective spectra determine the lasing wavelengths that reach resonance within each cavity. Wavelengths resonant in one cavity are suppressed in the others unless a wavelength is resonant in all cavities. This matching of mode intensities causes the outcoupled beam to be confined to a single wavelength.
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Amarasinghe Nuditha Vibhavie
Evans Gary A.
Masood Taha
Patterson Steven Gregory
Leung Quyen
McDonald Steven T.
O'Hagan Christopher P.
Photodigm Inc.
Yee Duke W.
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