Optically pumped distributed feedback thin film waveguide lasers with multiwavelength and polarized emissions

J. Wang, F. Chen, R. Li, H. Dong, J. Fan, L. Zhang, L. Shi, K. Y. Wong

Research output: Journal PublicationArticlepeer-review

4 Citations (Scopus)

Abstract

Zirconia titania organically modified silicate (ZrO 2-TiO 2-ORMOSIL) thin film waveguides of thickness from 0.4 to 7.0 μm were synthesized using low temperature sol-gel method. Narrow linewidth distributed feedback (DFB) lasing was demonstrated in rhodamine 6G-doped ZrO 2-TiO 2-ORMOSIL waveguides. Simultaneous tuning of multiple-output wavelengths was achieved in the dye-doped waveguides by varying the period of the gain modulation generated by a nanosecond Nd:YAG laser at 532 nm. As many as eight separate output wavelengths were observed for a planar ZrO 2-TiO 2-ORMOSIL waveguide of thickness 7.0-μm. The output polarizations of the DFB waveguide lasers can be tuned by varying the polarization of the crossing pump beams. TE and TM optical waves belonging to the same propagation mode were generated by crossing two polarized pump beams, resulting in an effective double of the number of output wavelengths. Continuous tuning of the polarized laser outputs was also achieved by varying the crossing angle.

Original languageEnglish
Pages (from-to)163-169
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume107
Issue number1
DOIs
Publication statusPublished - Apr 2012
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy (all)

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