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

Journal Article · Mon Sep 08 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4895632· OSTI ID:22310817

Lei, Fuchuan ^[1]; Peng, Bo; Yang, Lan ^[2]; Long, Gui Lu ^[1]

---

1. State Key Laboratory of Low-dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084 (China)
2. Department of Electrical and Systems Engineering, Washington University, St. Louis, Missouri 63130 (United States)

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.

• OSTI ID: 22310817
• Journal Information: Applied Physics Letters, Vol. 105, Issue 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASYMMETRY
DOPED MATERIALS
ERBIUM ADDITIONS
FANO FACTOR
GAIN
LASER RADIATION
RESONANCE
SILICA
SPECTRA
TIME DEPENDENCE
TRANSMISSION