Coherence and beam geometry of a superradiant dye laser |
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Authors: | H P Grieneisen R E Francke A Lago |
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Institution: | (1) Instituto de Física, Universidade Federal do Rio Grande do Sul, BR-90000 Porto Alegre, RS, Brasil |
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Abstract: | This paper reports the observation of a well defined radiation mode emitted from a superradiant dye laser pumped by a pulsed
nitrogen laser. Beam geometry and spatial coherence of the dye laser are studied in connection with the pumping geometry.
It is shown that under favorable pumping conditions most of the excited molecules radiate into the same spatial mode by stimulated
emission. The associated mode structure is also calculated based on a model of a properly phased dipole distribution. The
calculated emission pattern reproduces the observed far field pattern closely.
Work supported in part by CNPq and FINEP. |
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Keywords: | 42 60 42 10 |
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