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Updated: Apr 30, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Two-dimensional phononic-photonic band gap optomechanical crystal cavity
Amir H Safavi-Naeini1, Jeff T Hill1, Seán Meenehan1
1Kavli Nanoscience Institute and Thomas J. Watson, Sr., Laboratory of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA and Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA.
Abstract:
We present the fabrication and characterization of an artificial crystal structure formed from a thin film of silicon that has a full phononic band gap for microwave X-band phonons and a two-dimensional pseudo-band gap for near-infrared photons. An engineered defect in the crystal structure is used to localize optical and mechanical resonances in the band gap of the planar crystal. Two-tone optical spectroscopy is used to characterize the cavity system, showing a large coupling (g0/2π≈220 kHz) between the fundamental optical cavity resonance at ωo/2π=195 THz and colocalized mechanical resonances at frequency ωm/2π≈9.3 GHz.
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