Enhancement of light energy extraction from elliptical microcavity using external magnetic field for switching applications

Khoo, E. H.; Ahmed, I.; Li, E. P.
September 2009
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p121104
Academic Journal
In this letter, the extraction efficiency of light energy from an elliptically shaped microcavity laser is enhanced with external magnetic field. The magnetic field causes electrons to accumulate on the minor arc edge of the elliptical microcavity due to Lorentz force. As a result, the field amplitude at the minor arc edge is higher, and this improves light energy tunneling mechanism from the edge. The extraction efficiency from the microcavity increases by more than 30% after the application of magnetic field. Alternating the direction of the magnetic field allows the elliptical microcavity to function as a switching device.


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