Picosecond Phenomena pp 71-74 | Cite as
Amplified Spontaneous Emission in Rhodamine Dyes
Abstract
The excitation of dye solutions with intense short laser pulses results in an amplification of the fluorescence light by stimulated emission [1,2,3]. Here, the amplification of spontaneous emission (ASE) in rhodamine dyes is investigated with intense picosecond light pulses [4,5]. The purpose of the investigations is i) the generation of intense picosecond fluorescence emission, ii) the analysis of the effects of the various pump laser and dye parameters on the amplified spontaneous emission, and iii) the determination of molecular parameters, especially excited state absorption cross-sections and relaxation rates from highly excited singlet states.
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