Dye lasing in optically manipulated liquid aerosols

Yasin Karadag, Mehdi Aas, Alexandr Jonas*, Suman Anand, David McGloin, Alper Kiraz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution

Abstract

We present dye lasing from optically manipulated glycerol-water aerosols with diameters ranging between 7.7 and 11.0 μm confined in optical tweezers. While being optically trapped near the focal point of an infrared laser, the droplets stained with Rhodamine B were pumped with a Q-switched green laser and their fluorescence emission spectra featuring whispering gallery modes (WGMs) were recorded with a spectrograph. Nonlinear dependence of the intensity of the droplet WGMs on the pump laser fluence indicates dye lasing. The average wavelength of the lasing WGMs could be tuned between 600 and 630 nm by adjusting the droplet size. These results may lead to new ways of probing airborne particles, exploiting the high sensitivity of stimulated emission to small perturbations in the droplet laser cavity and the gain medium.

Original languageEnglish
Title of host publicationProceedings: Optical Trapping and Optical Micromanipulation X
PublisherSPIE
Volume8810
ISBN (Print)9780819496607
DOIs
Publication statusPublished - 12 Sep 2013
EventSPIE NanoScience + Engineering, 2013: Optical Trapping and Optical Micromanipulation X - San Diego, CA, United States
Duration: 25 Aug 201329 Aug 2013

Conference

ConferenceSPIE NanoScience + Engineering, 2013
Country/TerritoryUnited States
CitySan Diego, CA
Period25/08/1329/08/13

Keywords

  • Aerosol
  • Lasing
  • Nonlinear Optics
  • Optical Trapping

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