Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Reexamination Certificate
2007-09-04
2007-09-04
Leung, Quyen P (Department: 2874)
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
C385S014000, C372S043010
Reexamination Certificate
active
11090436
ABSTRACT:
An apparatus and methods for an optically pumped laser that has a cascade of light-emitting interband transitions are disclosed. The apparatus disclosed contains multistep interband cascade regions able to generate a plurality of photons for a pump photon absorbed from an optical pump source. The methods disclosed teach how to produce a plurality of photons for a pump photon absorbed from an optical pump source.
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Chow David
Narayanan Authi
Yap Daniel
HRL Laboratories LLC
Ladas & Parry
Leung Quyen P
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