Abstract
A simple dye-laser system is described in which Rhodamine dyes are pumped by a co-axial linear air flashlamp in a cylindrical elliptical pumping reflector. Output pulses lasting up to 1.5μsec and containing up to 250 mJ energy, have been successfully mode-locked to produce 100% modulated pulse trains. Employing a diffraction grating as cavity reflector to tune the laser frequency, in each case, for maximum absorption by the same Q-switching dye, successful mode-locking has been achieved with both Rhodamine B and Rhodamine 6G. Time resolved emission spectra have been recorded with an image tube streak camera and the effect of resonant reflectors has been studied.
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Bradley, D.J., O'neill, F. Passive mode-locking of flashlamp pumped Rhodamine dye-lasers. Opto-electronics 1, 69–74 (1969). https://doi.org/10.1007/BF01418099
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DOI: https://doi.org/10.1007/BF01418099