OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 12 — Apr. 20, 1999
  • pp: 2714–2723

Upconversion and Reduced 4F3 /2 Upper-State Lifetime in Intensely Pumped Nd:YLF

Jonathan D. Zuegel and Wolf Seka  »View Author Affiliations


Applied Optics, Vol. 38, Issue 12, pp. 2714-2723 (1999)
http://dx.doi.org/10.1364/AO.38.002714


View Full Text Article

Acrobat PDF (241 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Nonexponential decay of the 4F3/2 upper laser state in Nd:YLF was observed with time-resolved fluorescence spectroscopy and small-signal gain probes in low-doped (1.16-at. %) samples when intensely pumped to high population inversions. A rapid initial decay is observed after Q-switched laser pumping, followed by a longer nonexponential decay that is clearly identified as a phase of migration-assisted energy-transfer upconversion (ETU) in the hopping regime. During this phase, a rate-equation treatment is valid and the macroscopic ETU coefficient, α2 = (0.98 ∓ 0.03) × 10−16 cm3/s, is directly evaluated from the decay kinetics. The ETU and the migration microparameters are also estimated to be Cda* ≈ 200 × 10−40 cm6/s and Cdd ≈ 1000 × 10−40 cm6/s, respectively, and are compared with theoretical values found in the literature. On the basis of these values, rate-equation treatments of intensely pumped Nd:YLF are not strictly valid.

© 1999 Optical Society of America

OCIS Codes
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.7220) Nonlinear optics : Upconversion
(260.3800) Physical optics : Luminescence
(300.6500) Spectroscopy : Spectroscopy, time-resolved

Citation
Jonathan D. Zuegel and Wolf Seka, "Upconversion and Reduced 4F3 /2 Upper-State Lifetime in Intensely Pumped Nd:YLF," Appl. Opt. 38, 2714-2723 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-12-2714

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 OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited