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Title: Dynamic Fano-like resonances in erbium-doped whispering-gallery-mode microresonators

We report Fano-like asymmetric resonances modulated by optical gain in a whispering-gallery-mode resonator fabricated from erbium-doped silica. A time-dependent gain profile leads to dynamically varying sharp asymmetric resonances with features similar to Fano resonances. Depending on the scan speed of the frequency of the probe laser and the pump-probe power ratio, transmission spectra of the active microcavity exhibit a resonance dip, a resonance peak, or a Fano-like resonance.
Authors:
 [1] ;  [2] ; ; ;  [3] ;  [1]
  1. State Key Laboratory of Low-dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084 (China)
  2. (United States)
  3. Department of Electrical and Systems Engineering, Washington University, St. Louis, Missouri 63130 (United States)
Publication Date:
OSTI Identifier:
22310817
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ASYMMETRY; DOPED MATERIALS; ERBIUM ADDITIONS; FANO FACTOR; GAIN; LASER RADIATION; RESONANCE; SILICA; SPECTRA; TIME DEPENDENCE; TRANSMISSION