A taper-fused microspherical laser source

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A taper-fused microspherical laser source

Ward, Jonathan M.; Féron, Patrice; Nic Chormaic, Síle
Date: 2008-03
Copyright: © 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Citation: Ward, J.M.; Feron, P.; Nic Chormaic, S.; , "A Taper-Fused Microspherical Laser Source," Photonics Technology Letters, IEEE , vol.20, no.6, pp.392-394, March15, 2008 doi: 10.1109/LPT.2008.916904
Published Version: 10.1109/LPT.2008.916904

Abstract:

We report on the realization of an integrated lasing device consisting of a microsphere optical resonator fused to a tapered optical fiber. A microsphere fabricated from Er: Yb-codoped phosphate glass is heated above its glass transition temperature of 375degC by pumping it at 977 nm with 70 mW via a tapered optical fiber. The onset of thermal stress in the glass at a maximum pumping power results in the sphere melting and fusing to the taper coupler, without inhibition of whispering gallery mode lasing. A taper-fused microsphere laser with ~4.5 muW of lasing power at 1593 nm is demonstrated.

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