Performance of some rhodamone dyes designed for high-efficiency broadband lasing output

The performance of a family of rhodamone dyes designed for broadband lasing has been investigated. Conversion efficiencies of 60% and broadband lasing have been attained in this novel class of laser dyes. Lasing occurs in the 570 - 590 nm region with bandwidths twice that of high gain laser dyes such as rhodamine 6G and pyrromethene 580. The lasing characteristics of these stable dyes portends real benefits for the design of wavelength-agile systems.