We have investigated laser action in a binary mixture of dyes, Rh-6G and DCM, resulting in tunable laser emission over an extended frequency region. The two dyes absorb the same pump radiation but fluoresce over frequency ranges that are shifted with respect to each other, thereby resulting in extended tunability. Following a time-dependent analysis of a rate-equation model that describes the operation of such a laser, theoretical estimates for optimum dye concentrations and the corresponding extension of the laser tuning range have been obtained.
© 2002 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.2050) Lasers and laser optics : Dye lasers
(140.3430) Lasers and laser optics : Laser theory
(140.3600) Lasers and laser optics : Lasers, tunable
Sucharita Sinha, Alok K. Ray, Soumitra Kundu, Sasikumar, Tamal B. Pal, Sivagiriyal K. S. Nair, and Kamalesh Dasgupta, "Spectral Characteristics of a Binary Dye-Mixture Laser," Appl. Opt. 41, 7006-7011 (2002)