Room temperature studies of heavy metal fluoride glasses using Brillouin spectroscopy

Journal Article · · Applied Physics Communications; (USA)

OSTI ID:6287491

Pan, Z; Wicksted, J P ^[1]

---

1. Oklahoma State Univ., Stillwater (USA)

Room temperature Brillouin scattering measurements have been performed on a fluorozirconate glass (53.01 ZrF{sub 4}, 13.68 BaF{sub 2}, 5.51 LaF{sub 3}, 3.61 AlF{sub 3}, 19.19 NaF, 5.00 EuF{sub 3}) and a thoriated fluoride glass (19.0 Ba{sub 3}, 27.0 ZnF{sub 3}, 26.0 LuF{sub 3}, 27.0 ThF{sub 4}, 1.0 EuF{sub 3}). These glasses are transparent in the infra-red range and are promising materials for very long fiber optic communication lines. Values of the C{sub 11} and C{sub 44} elastic constants have been obtained and yield Poisson's Ratios which indicate these glasses to have higher coordination numbers and softer lattices than fused quartz. Further evidence of this is given by the small values of the P{sub 44} elasto-optic coefficient. In addition, by comparing the measured elastic Rayleigh component with that of the inelastic longitudinal Brillouin component, Rayleigh scattering losses have been determined from these two fluoride glasses. This study indicates much smaller losses occur from the fluorozirconate glass than from the thoriated fluoride glass.

• OSTI ID: 6287491
• Journal Information: Applied Physics Communications; (USA), Journal Name: Applied Physics Communications; (USA) Vol. 10:1-2; ISSN 0277-9374; ISSN APCOD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
BRILLOUIN EFFECT
COHERENT SCATTERING
ELEMENTS
EUROPIUM COMPOUNDS
EUROPIUM FLUORIDES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LANTHANUM
LANTHANUM COMPOUNDS
LANTHANUM FLUORIDES
MEDIUM TEMPERATURE
METALLIC GLASSES
METALS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RARE EARTHS
RAYLEIGH SCATTERING
SCATTERING
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS