The Wavelength Spectrum Shift of a Cavity-Dumped Argon laser-Pumped Rhodamine 6-G Organic-Dye Laser.

The wavelength spectrum of a CW pumped Rhodamine 6-G organic dye laser is observed to shift approximately 150 Angstroms toward shorter wavelengths when pumped by 30 nsec pulses at a one megahertz repetition rate from a cavity-dumped Argon laser. Experimental evidence of the shift is presented, gain and rate equations are developed for a simplified dye laser model, and theoretical results are obtained for a computer simulation of the experimental results and satisfactory agreement is obtained within the limits of the values of the parameters used and the assumptions made in formulating the model. Author