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.

doi:10.1016/j.jlumin.2015.09.002

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.

Authors

Jaison Peter

Mahesh Kumar

V.R. Ananad

Rasool Saleem

Ananthu Sebastian

P. Radhakrishnan

V.P.N. Nampoori

C.P.G. Vallabhan

Professor Radhakrishna Prabhu r.prabhu@rgu.ac.uk
Professor

M. Kailasnath

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
Contract Date	Mar 2, 2016