Measurements of ∂n/∂T for polymeric solid-state dye-laser gain media have been performed. The method employed in these measurements is simple transmission of a laser beam, at minimum deviation, through a gain matrix configured in a prismatic geometry. For rhodamine 6G-doped modified poly(methyl methacrylate) ∂n/∂T = - 1.4 ± 0.2 × 10<sup>-4</sup> K<sup>-1</sup> which is found to be a representative value for dye-doped polymeric gain media.
© 2000 Optical Society of America
F.J. Duarte, A. Costela, I. Garcia-Moreno, and R. Sastre, "Measurements of ∂n/∂T in-State Dye-Laser Gain Media," Appl. Opt. 39, 6522-6523 (2000)