Middle infrared luminescence of rare earth ions in silver halide crystals

G. Brodetzki, O. Gayer, I. Lyakhovsky, L. Nagli, A. Katzir

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

Abstract

Middle infrared laser systems for countermeasures against heat seeking missiles are currently under development. These systems, based on optical parametric oscillators, are complex, bulky and expensive. Middle-infrared fiber lasers emitting in the 3 - 5μm spectral region may provide an attractive alternative to the systems under development. We have investigated luminescence of silver bromide-chloride crystals and fibers doped with rare earth ions (e.g. Pr3+, Tb3+ and Nd3+) in the near and middle infrared spectral ranges. The emission, excitation, and absorption spectra, as well as the kinetic parameters, were measured over a broad temperature range. The crystal doping was produced by growing from the melt. No significant differences were found between the luminescence properties in bulk crystals and in fibers. The Judd-Ofelt analysis was applied to the doped crystals, and the transition rates, branching ratios, and quantum efficiencies were calculated. Good agreement was obtained between theory and experiment. The strong middle-infrared luminescence and the kinetic parameters of these crystals make them good candidates for the fabrication of fiber lasers in the 4-5.5μm spectral range.

Original languageEnglish
Title of host publicationLaser Source and System Technology for Defense and Security II
DOIs
StatePublished - 2006
EventLaser Source and System Technology for Defense and Security II - Kissimmee, FL, United States
Duration: 17 Apr 200618 Apr 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6216
ISSN (Print)0277-786X

Conference

ConferenceLaser Source and System Technology for Defense and Security II
Country/TerritoryUnited States
CityKissimmee, FL
Period17/04/0618/04/06

Fingerprint

Dive into the research topics of 'Middle infrared luminescence of rare earth ions in silver halide crystals'. Together they form a unique fingerprint.

Cite this