Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3479532
Keywords
dye lasers; finite element analysis; laser cavity resonators; optical pumping; silicon; whispering gallery modes
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Funding
- DFG Research Center for Functional Nanostructures (CFN) Karlsruhe
- Ministry of Science, Research
- Arts of Baden-Wurttemberg [Az:7713.14-300]
- German Federal Ministry for Education and Research BMBF [FKZ 13N8168A]
- Concept for the Future of the Karlsruhe Institute of Technology (KIT) [YIG 08]
- Danish Research Council for Technology and Production Sciences [274-09-0105]
- EC [NMP2-LA_2008_214249]
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We report on lasing in rhodamine 6G-doped, conical polymeric microcavities with high quality factors fabricated on a silicon substrate. Threshold pump energies as low as 3 nJ are achieved by free-space excitation in the quasistationary pumping regime with lasing wavelengths around 600 nm. Finite element simulations confirm that lasing occurs in whispering gallery modes which corresponds well to the measured multimode laser-emission. The effect of dye concentration on lasing threshold and lasing wavelength is investigated and can be explained using a standard dye laser model. (C) 2010 American Institute of Physics. [doi:10.1063/1.3479532]
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