Microgear laser
- 25 March 2002
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 80 (12) , 2051-2053
- https://doi.org/10.1063/1.1462867
Abstract
A microlaser, microgear, composed of a microdisk and a rotationally symmetric Bragg grating is described. A GaInAsP–InP device with μm radius was fabricated and the room-temperature continuous-wave operation was obtained by photopumping with a low threshold of 17 μW. The experiment clearly demonstrated that the Q factor in a microdisk was enhanced by the microgear due to the minimization of the radiation field. Resonant spectra showed some unique mode characteristics influenced by an elliptical cavity. These results suggest a potential of advanced engineering of whispering-gallery-mode laser with a photonic crystal, the generalized Bragg grating.Keywords
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