Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4895632
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Funding
- U.S. Army Research Office [W911NF-12-1-0026]
- National Natural Science Foundation of China [11175094, 91221205]
- National Basic Research Program of China [2011CB921602]
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We report Fano-like asymmetric resonances modulated by optical gain in a whispering-gallerymode 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. (C) 2014 AIP Publishing LLC.
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