Abstract

The effect of hydrostatic pressure on the fluorescence spectrum of rhodamine 6G dye in two different solutions is studied. The peak shifts to longer wavelengths with increasing pressure with a pressure coefficient of −29 and −19 cm−1/kbar for ethanol and 4:1 methanol–ethanol solvents, respectively. Possible applications of increasing the tunability of dye lasers by pressure are discussed.

© 1985 Optical Society of America

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