Effect of the solvent viscosity on the local irregular intensity fluctuations in high Fresnel number dye lasers

Author

Calderón, Oscar G. ; Leyva, I. ; Guerra, José M.

Author_Institution

Dept. de Opt., Univ. Complutense de Madrid, Spain

Volume

35

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

1

Lastpage

6

Abstract

We study the influence of the solvent viscosity in the local irregular intensity fluctuations characteristic of high Fresnel number dye lasers. The relative amplitude of the fluctuations in a flashlamp-pumped dye laser is analyzed, We complete our previous work by using several solvents and different excitation energies above threshold. A decrease of the relative fluctuation amplitude is found as the solvent viscosity or the pumping energy increases. This effect is theoretically analyzed in the framework of the semiclassical Maxwell-Bloch equations, with a model based on the orientation of the dye molecules driven by the laser field in the solvent. These results point out the importance of the orientation of the dye molecules in the intensity fluctuation phenomenon

Keywords

dye lasers; flash lamps; fluctuations; optical pumping; viscosity; above threshold; dye molecule orientation; excitation energies; flashlamp-pumped dye lase; high Fresnel number dye lasers; laser field; local irregular intensity fluctuations; pumping energy; relative fluctuation amplitude; semiclassical Maxwell-Bloch equations; solvent viscosity; Fluctuations; Laser excitation; Laser feedback; Laser modes; Laser theory; Optical feedback; Optical polarization; Pump lasers; Solvents; Viscosity;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.737611

Filename

737611