Table of Contents
Advances in Optical Technologies
Volume 2016, Article ID 1548927, 4 pages
http://dx.doi.org/10.1155/2016/1548927
Research Article

A Polymer Film Dye Laser with Spatially Modulated Emission Controlled by Transversely Distributed Pumping

V. Chavchanidze Institute of Cybernetics of the Georgian Technical University, 5 Sandro Euli St., 0186 Tbilisi, Georgia

Received 16 June 2016; Revised 24 August 2016; Accepted 5 September 2016

Academic Editor: Giancarlo C. Righini

Copyright © 2016 Zurab V. Wardosanidze et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Spatial modulation of laser emission controlled by the structure of excitation light field was demonstrated. A dye doped polymer film as an active medium was sandwiched between two laser mirrors forming a laser cell. The pumping was performed by an interference pattern formed with two mutually coherent beams of the second harmonic of a Q-switched Nd:YAG laser (532 nm) and located in the plane of the laser cell. The laser emission was observed normally on the plane of the cell. The cross section of the obtained laser emission was modulated in intensity with an interval between maximums depending on the period of the pumping interference pattern. Thus, the emitted light field qualitatively looks like diffraction from an elementary dynamic hologram, that is, a holographic diffraction grating.