Quantum dot laser
- P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
- Texas A and M University, College Station, Texas (United States)
An analysis is made of the self-excitation condition for a laser in which the active medium is a 'quantum dot' and a whispering-gallery mode of a dielectric microsphere acts as the cavity. It is pointed out that the interaction of a quantum dot with an ensemble of degenerate or near-degenerate modes increases the laser excitation coefficient. A calculation is made of the dependence of the effective volume of a whispering-gallery mode on its index. It is shown that the field maximum of an E-type whispering-gallery mode lies on the surface of a sphere, whereas for an H-type mode this maximum is shifted along the radius into the sphere. Calculations suggest that it should be possible to construct a microlaser even on the basis of a single quantum dot. (lasers)
- OSTI ID:
- 21437757
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 28, Issue 3; Other Information: DOI: 10.1070/QE1998v028n03ABEH001188; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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