Tuning whispering gallery lasing modes from polymer fibers under tensile strain

Wavelength tuning of whispering gallery lasing modes has been observed from Rhodamine-B-doped polymer fibers under tensile strain. Good quality whispering gallery lasing modes are produced from both solid and hollow fibers by transverse optical pumping. The lasing modes are shifted linearly toward t...

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Bibliographic Details
Published in:Optics letters 2016-02, Vol.41 (3), p.551-554
Main Authors: Linslal, C L, Kailasnath, M, Mathew, S, Nideep, T K, Radhakrishnan, P, Nampoori, V P N, Vallabhan, C P G
Format: Article
Language:English
Subjects:
Elongation
Fibers
Galleries
Lasing
Optical fibers
Optical pumping
Tuning
Wavelengths
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Summary:Wavelength tuning of whispering gallery lasing modes has been observed from Rhodamine-B-doped polymer fibers under tensile strain. Good quality whispering gallery lasing modes are produced from both solid and hollow fibers by transverse optical pumping. The lasing modes are shifted linearly toward the shorter wavelength side when the fiber is elongated in the axial direction. Compared with solid fiber, the lasing modes of hollow fiber can be tuned over the entire gain spectrum with a tuning range of ∼5  nm. It is found that the tuning of the lasing modes of hollow fiber is reversible.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.000551