Title

Study Of Auger Upconversion Process In Cr3+ And Nd3+ Doped Solids

Keywords

Fluorides crystals; Thermal Lens; Upconversion

Abstract

In this work we applied the Thermal Lens (LT) technique to determine the upconversion parameter (γ) for Cr3+: LiSrAlF6, Cr3+: LiSrGaF6, Cr3+: SrAlF5 and Nd3+: ZBLAN. The measures for the Cr3+ doped fluorides were accomplished at 15 °C, to eliminate the suppression effect due to temperature and upon excitation in the cw regime. We used Ar+ laser (488 and 514 nm) and dye (601 nm) laser radiation for the Cr3+ doped crystals and 514 nm and 796.7 nm (Ti-sapphire) for the Nd3+ doped glasses. We observed a nonlinear increase of the TL signal with excitation power, characterizing a fluorescence quantum efficiency (η) decrease that was attributed to the Auger effect. A theoretical model was developed to obtain γ from the TL data. © 2001 SPIE · 0277-786X/01/$15.00.

Publication Date

1-1-2001

Publication Title

Proceedings of SPIE-The International Society for Optical Engineering

Volume

4419

Number of Pages

142-145

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.437205

Socpus ID

0035759948 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0035759948

This document is currently not available here.

Share

COinS