Title

Discrimination Between Thermal Quenching Of The Fluorescence And Auger Upconversion Processes Using Thermal Lens Technique

Abstract

In this work we used the Thermal Lens (TL) technique to discriminate two important processes responsible to reduce the upper-state population and fluorescence quantum efficiency (η) in Cr3+ doped colquiriite crystals: the thermal quenching of the fluorescence (TQF) and the Auger upconversion (ETU). We observed a nonlinear increase of the TL signal with laser power due to the decrease of η by ETU and/or TQF. The analysis of these curves allowed the determination of the thermal load, the increase of the crystal temperature as a function of the pump excitation and the discrimination between ETU and TQF processes. © 2006 Elsevier B.V. All rights reserved.

Publication Date

3-1-2007

Publication Title

Optics Communications

Volume

271

Issue

1

Number of Pages

184-189

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.optcom.2006.10.005

Socpus ID

33846126246 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33846126246

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