Tuning Of An Active Photonic Crystal Cavity By An Hybrid Silica/Silicon Near-Field Probe

Optical Soc Amer
Publication Type:
Journal Article
Optics Express, 2009, 17 (24), pp. 21672 - 21679
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The influence of a near-field tip on the spectral characteristics of a resonant mode of an active photonic crystal micro-cavity was investigated. The wavelength shift of the mode was theoretically and experimentally demonstrated and evaluated as a function of the nature and the position of the tip above the cavity. Experiment showed that the shift induced is ten times higher with a Si-coated silica probe than with a bare silica tip: a shift until 2 nm was reached with Si-coated tip whereas the shift with bare silica tip is in the range of the tenth of nanometer, for wavelengths around 1,55 ìm.
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