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Opt Express. 2011 Oct 24;19(22):21524-31. doi: 10.1364/OE.19.021524.

Electrically pumped sub-wavelength metallo-dielectric pedestal pillar lasers.

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  • 1Department of Electrical and Computer Engineering, University of California at San Diego, La Jolla, California 92093, USA.


Electrically driven subwavelength scale metallo-dielectric pedestal pillar lasers are designed and experimentally demonstrated. The metallo-dielectric cavity significantly enhances the quality factor (Q > 1500) of the wavelength and subwavelength scale lasers and the pedestal structure significantly reduces the threshold gain (< 400 cm(-1)) which can potentially enable laser operation at room temperature. We observed continuous wave lasing in 750 nm gain core radius laser at temperatures between 77 K and 140 K with a threshold current of 50 μA (at 77 K). We also observed lasing from a 355 nm gain core radius laser at temperatures between 77 K and 100 K.

© 2011 Optical Society of America

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