| 摘要 |
The present invention is a light emitting device apparatus and method of fabrication. The structure employs a waveguide in the lateral (x) direction formed via materials index, resonant wavelength and/or current-induced index changes. In the vertical (y) direction a resonant optical cavity is formed via distributed Bragg reflector and/or metal mirrors with sufficient reflectivity so as to create a substantial standing wave. The light is thereby constricted to propagate in the longitudinal (z) direction. A tapered output section may be employed to suppress lasing in the longitudinal direction or to losslessly transfer the light from the confined section to a resonant output coupler. Conversely, feedback may be employed to induce lasing in the longitudinal direction by suitable means, such as a periodic variation in the material index, resonant wavelength, gain or loss. The resonant output coupler may be formed by suitable means, such as mirror or cavity modulation.
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