Half-wavelength micropost microcavity with electric field...

Details Half-wavelength micropost microcavity with electric field... Half-wavelength micropost microcavity with electric field...

2007-11-06

2007-11-06

Nguyen, Dung (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S039000

Reexamination Certificate

active

10631665

ABSTRACT:
A micropost microcavity device has a maximum field intensity at the center of a high-index spacer as well as a small mode volume. The device has an approximately half-wavelength thick low-index spacer [400]sandwiched between two quarter wave stacks [410, 420]. The low-index spacer has a high-index subspacer layer [470]positioned at its center. The subspacer layer has a thickness smaller than a quarter wavelength. As a result, the electric field intensity remains a maximum at the center of the spacer where the high-index subspacer is positioned. A quantum dot or other active region [480]may be embedded within the subspacer [470]. The microcavity devices provide, for example, single photon sources, single dot lasers, low-threshold quantum dot or quantum well lasers, or devices for strong coupling between a single quantum dot and the cavity field which can be used as components of photonic integrated circuits, quantum computers, quantum networks, or quantum cryptographic systems.

REFERENCES:
patent: 6687274 (2004-02-01), Kahen
patent: 2002/0163947 (2002-11-01), Ostergaard et al.

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