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Updated: May 5, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Spectral engineering of slow light, cavity line narrowing, and pulse compression
Mahmood Sabooni1, Qian Li, Lars Rippe
1Department of Physics, Lund University, Post Office Box 118, SE-22100 Lund, Sweden.
Abstract:
More than 4 orders of magnitude of cavity-linewidth narrowing in a rare-earth-ion-doped crystal cavity, emanating from strong intracavity dispersion caused by off-resonant interaction with dopant ions, is demonstrated. The dispersion profiles are engineered using optical pumping techniques creating significant semipermanent but reprogrammable changes of the rare-earth absorption profiles. Several cavity modes are shown within the spectral transmission window. Several possible applications of this phenomenon are discussed.

