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Proceedings Paper

Laser emission from dye mixture doped polymer optical fiber
Author(s): Sheeba Mavila Nambiar; Thomas Kannampuzha Jhony; Rajesh Mandamparambil; Nitish Kumar; Praveen C. Ashok; Vadakedathu P. Nampoori; Radhakrishnan Padmanabhan
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Paper Abstract

Multimode laser emission is observed in a polymer optical fiber doped with a mixture of rhodamine 6G and rhodamine B dyes. Tuning of laser emission is achieved by using the mixture of dyes due to the energy transfer occurring from donor molecule (rhodamine 6G) to acceptor molecule (rhodamine B). The dye doped polymethylmethacrylate (PMMA) based polymer optical fiber is pumped axially at one end of the fiber using 532nm pulsed laser beam from an 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.

Paper Details

Date Published: 17 September 2007
PDF: 10 pages
Proc. SPIE 6698, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications, 66981O (17 September 2007); doi: 10.1117/12.732823
Show Author Affiliations
Sheeba Mavila Nambiar, Cochin Univ. of Science & Technology (India)
Thomas Kannampuzha Jhony, Cochin Univ. of Science & Technology (India)
Rajesh Mandamparambil, Cochin Univ. of Science & Technology (India)
Nitish Kumar, Cochin Univ. of Science & Technology (India)
Praveen C. Ashok, Cochin Univ. of Science & Technology (India)
Vadakedathu P. Nampoori, Cochin Univ. of Science & Technology (India)
Radhakrishnan Padmanabhan, Cochin Univ. of Science & Technology (India)


Published in SPIE Proceedings Vol. 6698:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications
Ruyan Guo; Shizhuo S. Yin; Francis T.S. Yu, Editor(s)

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