Electrically pumped sub-wavelength metallodielectric pedestal pillar lasers

Lee, J.H.; Khajavikhan, M.; Simic, A.; Gu, Q.; Bondarenko, O.; Slutsky, B.; Nezhad, M.P.; Fainman, Y.

Abstract

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.

• Journal Article Type: Article
• Acceptance Date: Sep 20, 2011
• Online Publication Date: Oct 18, 2011
• Publication Date: Oct 24, 2011
• Deposit Date: Aug 21, 2024
• Publicly Available Date: Sep 2, 2024
• Journal: Optics Express
• Electronic ISSN: 1094-4087
• Publisher: Optical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 19
• Issue: 22
• Pages: 21524-21531
• DOI: https://doi.org/10.1364/OE.19.021524