Surface-emitting laser device

Details Surface-emitting laser device Surface-emitting laser device

2011-07-05

2011-07-05

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S050124

Reexamination Certificate

active

07974324

ABSTRACT:
A surface-emitting laser device includes: a substrate; a low refractive index layer with a refractive index nLand disposed on the substrate; a light emitting layered structure with a refractive index nH, where nH>nL, the light emitting layered structure being formed on the low refractive index layer and having first and second semiconductor layers and a multi-quantum well (MQW) disposed between the first and second semiconductor layers and capable of generating photons having a wavelength λ0; and a two-dimensional photonic crystal (2DPC) formed in the light emitting layered structure and having optical nanostructures arranged into a periodic pattern with a lattice constant a. The nanostructures extend from the first semiconductor layer through the MQW. The 2DPC has a normalized frequency, which is defined as a/λ0, ranging from 0.25 to 0.70.

REFERENCES:
patent: 5955749 (1999-09-01), Joannopoulos et al.
patent: 6778581 (2004-08-01), Lipson
patent: 6810056 (2004-10-01), Lipson et al.
patent: 2004/0091010 (2004-05-01), Choquette et al.

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