Share Email Print
cover

Proceedings Paper

Droplet resonator based optofluidic microlasers
Author(s): Alper Kiraz; Alexandr Jonáš; Mehdi Aas; Yasin Karadag; Oto Brzobohatý; Jan Ježek; Zdeněk Pilát; Pavel Zemánek; Suman Anand; David McGloin
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We introduce tunable optofluidic microlasers based on active optical resonant cavities formed by optically stretched, dye-doped emulsion droplets confined in a dual-beam optical trap. To achieve tunable dye lasing, optically pumped droplets of oil dispersed in water are stretched by light in the dual-beam trap. Subsequently, resonant path lengths of whispering gallery modes (WGMs) propagating in the droplet are modified, leading to shifts in the microlaser emission wavelengths. We also report lasing in airborne, Rhodamine B-doped glycerolwater droplets which were localized using optical tweezers. While being trapped near the focal point of an infrared laser, the droplets were pumped with a Q-switched green laser. Furthermore, biological lasing in droplets supported by a superhydrophobic surface is demonstrated using a solution of Venus variant of the yellow fluorescent protein or E. Coli bacterial cells expressing stably the Venus protein. Our 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.

Paper Details

Date Published: 4 March 2014
PDF: 7 pages
Proc. SPIE 8960, Laser Resonators, Microresonators, and Beam Control XVI, 896015 (4 March 2014); doi: 10.1117/12.2041447
Show Author Affiliations
Alper Kiraz, Koç Univ. (Turkey)
Alexandr Jonáš, Istanbul Technical Univ. (Turkey)
Mehdi Aas, Koç Univ. (Turkey)
Yasin Karadag, Koç Univ. (Turkey)
Oto Brzobohatý, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Jan Ježek, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Zdeněk Pilát, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Pavel Zemánek, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Suman Anand, Univ. of Dundee (United Kingdom)
David McGloin, Univ. of Dundee (United Kingdom)


Published in SPIE Proceedings Vol. 8960:
Laser Resonators, Microresonators, and Beam Control XVI
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko; Lutz Aschke; Kunihiko Washio, Editor(s)

© SPIE. Terms of Use
Back to Top