This Letter presents a polarimetric study of the emission of random lasers from organic dyes. Coherent lasing modes from samples with ethanol solvent showed a high degree of polarization and did not influence each other in polarization. The proper choice of a laser dye with asymmetric absorption momenta, a highly viscous solvent, and a linear pump polarization can cause the random lasing emission to be completely linearly polarized for all wavelengths within the amplification range.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: June 11, 2012
Revised Manuscript: July 17, 2012
Manuscript Accepted: July 24, 2012
Published: August 27, 2012
Sebastian Knitter, Michael Kues, and Carsten Fallnich, "Emission polarization of random lasers in organic dye solutions," Opt. Lett. 37, 3621-3623 (2012)