Dispersive Optomechanical Coupling and Cooling in Ultrahigh-Q/V Slot-Type Photonic Crystal Cavities

Editor(s)

de Sterke, C. Martijn

Abstract

We describe the strong optomechanical dynamical interactions in ultrahigh-Q/V slot-type photonic crystal cavities. The dispersive coupling is based on mode-gap photonic crystal cavities with light localization in an air mode with 0.02((λ/n)3 modal volumes while preserving optical cavity Q up to 5 x 10⁶. The mechanical mode is modeled to have fundamental resonanceΩm /2π of 460 MHz and a quality factor Qm estimated at 12,000. For this slot-type optomechanical cavity, the dispersive coupling g[subscript om] is numerically computed at up to 940 GHz/nm (L[subscript om] of 202 nm) for the fundamental optomechanical mode. Dynamical parametric oscillations for both cooling and amplification, in the resolved and unresolved sideband limit, are examined numerically, along with the displacement spectral density and cooling rates for various operating parameters.

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

1094-4087

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Optical Society of America, All rights reserved.

Publication Date

01 Jan 2010

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