Intrinsic chromatic switching of luminescence in Yb3+, Er3+:CsCdBr3

S. Redmond, A. Kuditcher, S. C. Rand

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Summary form only given. Previously, we have reported intrinsic instabilities of the luminescent intensity from a variety of Yb-containing compounds. In heavy metal halides, this phenomenon has been explained as a manifestation of driven local field effects in dense radiation systems. While earlier observations revealed abrupt changes in luminescent intensity under quasi-static conditions, no abrupt changes in the wavelength of the emitted light were found. Here, we report the first observations of intrinsic chromatic instabilities that accompany bistability of the luminescent intensity in a multi-ion system. For our experiments, randomly-oriented samples of crystals of Er,Yb:CsCdBr3 were cooled by direct contact with flowing helium vapor to the range 4-40 K, and subjected to weakly-focused radiation from a Ti:sapphire laser tuned to the vicinity of Yb absorption features at 943 nm with a 2-plate birefringent filter. No detectable upconversion emission was generated with pump light tuned to 943 nm in crystals lacking the Yb sensitizer. However, the co-doped sample produced intense upconversion when excited at this wavelength, indicating that visible upconversion takes place through cooperative sensitization of Er luminescence by Yb in this host crystal.

Original languageEnglish
Title of host publicationTechnical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages14-15
Number of pages2
ISBN (Electronic)155752663X, 9781557526632
DOIs
Publication statusPublished - 2001
Externally publishedYes
EventQuantum Electronics and Laser Science Conference, QELS 2001 - Baltimore
Duration: 6 May 200111 May 2001

Publication series

NameTechnical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001

Conference

ConferenceQuantum Electronics and Laser Science Conference, QELS 2001
Country/TerritoryUnited States
CityBaltimore
Period6/05/0111/05/01

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