Polarization-dependent laser action in a two-dimensional random medium

Tetsu Ito and Makoto Tomita
Phys. Rev. E 66, 027601 – Published 7 August 2002
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Abstract

We examined laser action in a two-dimensional amplifying and scattering medium consisting of random array of dye-doped plastic fiber. When the excitation pulse energy was increased, the parallel emission component to the fiber first reached the laser threshold showing spectral collapse, and then further increase in the excitation pulse energy resulted in the subsequent laser action in the perpendicular component. Two-beam spatial-correlation measurement was performed to examine the gain regions. It was found that the size of the gain region is different between the two polarization components. Experimental results on the threshold and the gain region are discussed on the basis of simple rate equations.

  • Received 14 March 2002

DOI:https://doi.org/10.1103/PhysRevE.66.027601

©2002 American Physical Society

Authors & Affiliations

Tetsu Ito and Makoto Tomita

  • Department of Physics, Faculty of Science, Shizuoka University, 836 Ohya Shizuoka, Japan 422-8529

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Issue

Vol. 66, Iss. 2 — August 2002

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