A theoretical analysis of optical gain and saturation of organic dye lasers is presented. An analysis based on a solution o f the laser rate equations establishes a convenient method of optical gain measurement by internal fluorescence probing for low-gain system s, such as vapors of organic dyes. The concomitant limitations of high-gain system s (e.g. organic dyes in liquid solutions) of small-signal gain due to amplified spontaneous emission (ASE) and problems associated with gain saturation at high signal inputs are discussed in detail.
Received: 1978-4-26
Published Online: 2014-6-2
Published in Print: 1978-9-1
© 1946 – 2014: Verlag der Zeitschrift für Naturforschung
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