Temperature dependence of the wavelength and threshold of fiber-taper-coupled L-band Er 3+-doped tellurite glass microsphere laser

Xiang Peng, Feng Song, Makoto Kuwata-Gonokami, Shibin Jiang, N. Peyghambarian

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The significance of temperature dependence of the wavelength and the laser emission threshold of fiber-taper-coupled Er 3+-doped tellurite glass microsphere was analyzed. A rise in the microsphere laser emission threshold and a shift in emitted laser wavelength occurred with the temperature. A shift in the resonant wavelength of the pumping light was caused by the changes of the size and refractive index of the microsphere. A quasi-four-level model was used to show the reduction of laser threshold, achieved at lower temperatures and higher Q values of the microsphere laser.

Original languageEnglish (US)
Pages (from-to)5380-5382
Number of pages3
JournalApplied Physics Letters
Issue number26
StatePublished - Dec 29 2003


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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