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AssigneesThe Board of Trustees of the Leland Stanford Junior University, Japan Science and Technology Corporation
InventorsJelena Vuckovic, Yoshihisa Yamamoto
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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.
An optical device designed for operating at a predetermined operating wavelength λop<λ, where λ is a predetermined design wavelength, the device comprising:
A VCSEL comprising:
An optical device comprising:
Dependencies are inferred from the claim text.