Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Spectral and temporal measurements of laser action of Rhodamine 640 dye in strongly scattering media

Not Accessible

Your library or personal account may give you access

Abstract

Laser action of Rhodamine 640 perchlorate in highly scattering media consisting of TiO2 nanoparticles in methanol pumped by a 3-ns 532-nm laser pulse is observed by use of spectral and temporal measurements. The threshold for stimulated emission is dependent on the concentration of both laser dye and scattering particles. For a 2.5 × 10−2 M dye concentration, the lasing threshold was found to be reduced by more than 2 orders of magnitude when the density of scattering particles was increased from 5 × 109 to 2.5 × 1012 cm−3. However, for a concentration of 5 × 10−4 M of Rhodamine 640 the lasing threshold was higher in scattering media than for the methanol host. The pulse duration of stimulated emission for Rhodamine 640 perchlorate in these random systems is ~50 ps.

© 1994 Optical Society of America

Full Article  |  PDF Article
More Like This
Competition between two lasing modes of Sulforhodamine 640 in highly scattering media

W. L. Sha, C.-H. Liu, Feng Liu, and R. R. Alfano
Opt. Lett. 21(16) 1277-1279 (1996)

Time-resolved studies of stimulated emission from colloidal dye solutions

Masood Siddique, R. R. Alfano, G. A. Berger, M. Kempe, and A. Z. Genack
Opt. Lett. 21(7) 450-452 (1996)

Spectral measurements of the emission from highly scattering gain media

G. Beckering, S. J. Zilker, and D. Haarer
Opt. Lett. 22(18) 1427-1429 (1997)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved