Site-dependent decay rates and fluorescence line narrowing of Mo/sup 3 +/ in phosphate glass

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.23.11· OSTI ID:6722219

Weber, M J; Brawer, S A; DeGroot, A J

Nonexponential fluorescence decays with rates varying with emission wavelength by more than a factor of 25 are measured for the /sup 2/E..-->../sup 4/A/sub 2/ emission from Mo/sup 3 +/ in phosphate glass. Based upon estimated radiative decay rates and the strong temperature dependence of the observed decay rates, the decay occurs principally by multiphonon emission. The large variation in rates is attributed to site-dependent differences in the strength of the ion-phonon coupling. Time-resolved broadband-excited fluorescence spectra exhibit line narrowing and spectral shifts with time. Fluorescence spectra obtained using a tunable laser to excite the /sup 4/A/sub 2/-/sup 2/E transition exhibit a small amount of line narrowing and establish that the emission from Mo/sup 3 +/ in glass is predominantly vibronic in nature.

• Research Organization: Lawrence Livermore National Laboratory, University of California, Livermore, California 94550
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6722219
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 23:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
AMORPHOUS STATE
CHARGED PARTICLES
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
GLASS
IONS
LINE NARROWING
MOLYBDENUM IONS
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHONONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
QUASI PARTICLES
SPECTROSCOPY
TEMPERATURE DEPENDENCE