Solvent effects on lasing characteristics for Rh B laser dye.

Peter, Jaison; Kumar, Mahesh; Ananad, V.R.; Saleem, Rasool; Sebastian, Ananthu; Radhakrishnan, P.; Nampoori, V.P.N.; Vallabhan, C.P.G.; Prabhu, Radhakrishna; Kailasnath, M.

Abstract

We demonstrate pulsed, photopumped multimode laser emission in the visible spectral range from rhodamine B dye dissolved in various solvents. The laser emission is characterized by a well-defined, low threshold pump power at which the emission spectral intensity dramatically increases and collapsed into several dominant laser modes with reduced mode spacing and spectral width. The modes were found to originate from the subcavities formed by the plane-parallel walls of the cuvette containing the gain medium. The cavity lasing spectral structure and the numbers of longitudinal modes were easily controlled by changing the solvents. A shift in the emission spectra has been also observed by changing the solvents will allow a limited range of tuning of laser emission wavelength. We also determined the gain coefficient and stimulated emission cross-section for the Rh B dye dissolved liquid laser system. A detailed discussion of the solvent effect in the lasing characteristics of Rh B in different solution is explained along with the computational data.

Citation

PETER, J., KUMAR, M., ANANAD, V.R., SALEEM, R., SEBASTIAN, A., RADHAKRISHNAN, P., NAMPOORI, V.P.N., VALLABHAN, C.P.G., PRABHU, R. and KAILASNATH, M. 2016. Solvent effects on lasing characteristics for Rh B laser dye. Journal of luminescence [online], 169(Part A), pages 227-232. Available from: https://doi.org/10.1016/j.jlumin.2015.09.002

• Journal Article Type: Article
• Acceptance Date: Sep 2, 2015
• Online Publication Date: Sep 25, 2015
• Publication Date: Jan 31, 2016
• Deposit Date: Mar 2, 2016
• Publicly Available Date: Sep 26, 2016
• Journal: Journal of luminescence
• Print ISSN: 0022-2313
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 169
• Issue: Part A
• Pages: 227-232
• DOI: https://doi.org/10.1016/j.jlumin.2015.09.002
• Keywords: Dye laser; Stokes shift; Solvent tuning; Resonant modulation
• Public URL: http://hdl.handle.net/10059/1404