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Title

Photothermal characterization and stability analysis of polymeric dye lasers

AuthorsDuchowicz, Ricardo; Scaffardi, Lucía B.; Costela, A. CSIC ORCID; Garcia-Moreno, I. CSIC ORCID; Sastre Muñoz, Roberto CSIC; Acuña, A. Ulises CSIC
KeywordsPolymeric Dye Lasers
Photothermal Characterization
Stability Analysis
Issue Date2000
PublisherOptical Society of America
CitationAppl. Optics 39, 4959-4963 (2000)
AbstractThe millisecond heat dissipation of pump energy in polymeric, solid-state dye lasers has been studied with photothermal deflection spectroscopy (PTDS) to determine the contribution of that process to photodegradation of the active material. The samples were solutions of Rhodamine 6G in 2-hydroxyethyl methacrylate copolymerized with various amounts of methyl methacrylate or ethylene glycol dimethylacrylate to change the microstructure properties of the matrix. Values of the thermal diffusivity measured with PTDS were in the range 0.6–1.1 × 10−3 cm2 s−1 for all the compositions studied here. A comparison of these values with previous optical data on lasing efficiency and photostability for the same samples indicates that the macroscopic rate of thermal diffusion is not the key factor that limits the efficiency and stability of these lasers, at least for low pump repetition rates (<1 Hz).
Publisher version (URL)http://dx.doi.org/10.1364/AO.39.004959
URI10261/11785
DOI10.1364/AO.39.004959
ISSN0003-6935
Appears in Collections:(IQFR) Artículos

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