Ultrasmall Mode Volumes in Dielectric Optical Microcavities
Journal Article
·
· Physical Review Letters
- Department of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853 (United States)
We theoretically demonstrate a mechanism for reduction of mode volume in high index contrast optical microcavities to below a cubic half wavelength. We show that by using dielectric discontinuities with subwavelength dimensions as a means of local field enhancement, the effective mode volume (V{sub eff}) becomes wavelength independent. Cavities with V{sub eff} on the order of 10{sup -2}({lambda}/2n){sup -3} can be achieved using such discontinuities, with a corresponding increase in the Purcell factor of nearly 2 orders of magnitude relative to previously demonstrated high index photonic crystal cavities.
- OSTI ID:
- 20696523
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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