Multimode laser emission from dye doped polymer optical fiber

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Multimode laser emission from dye doped polymer optical fiber

Show simple item record Sheeba, Mavila Thomas, Kannampuzha J Rajesh, Mandamparambil Nampoori, Vadakkedathu P N Vallabhan, Chakkalakkal P G Radhakrishnan, Padmanabhan 2011-11-08T08:58:42Z 2011-11-08T08:58:42Z 2007
dc.identifier.other Applied Optics, Vol. 46, Issue 33, pp. 8089-8094 (2007)
dc.description.abstract Multimode laser emission is observed in a polymer optical fiber doped with a mixture of Rhodamine 6G (Rh 6G) and Rhodamine B (Rh B) dyes. Tuning of laser emission is achieved by using the mixture of dyes due to the energy transfer occurring from donor molecule (Rh 6G) to acceptor molecule (Rh B). The dye doped poly(methyl methacrylate)-based polymer optical fiber is pumped axially at one end of the fiber using a 532 nm pulsed laser beam from a Nd:YAG laser and the fluorescence emission is collected from the other end. At low pump energy levels, fluorescence emission is observed. When the energy is increased beyond a threshold value, laser emission occurs with a multimode structure. The optical feedback for the gain medium is provided by the cylindrical surface of the optical fiber, which acts as a cavity. This fact is confirmed by the mode spacing dependence on the diameter of the fiber. en_US
dc.description.sponsorship Cochin University of Science and Technology & School of Engineering and Mathematical Sciences, City University en_US
dc.language.iso en en_US
dc.publisher Optical Society of America en_US
dc.subject laser emission en_US
dc.title Multimode laser emission from dye doped polymer optical fiber en_US
dc.type Working Paper en_US
dc.contributor.faculty Technology en_US
dc.identifier.url en_US

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