Search for far infrared radiation from optically pumped defect modes. Final report, 1 March 1990-28 February 1993

Technical Report · Wed May 05 00:00:00 EDT 1993

OSTI ID:5906371

Sievers, A J

Five different experimental studies are described. (1) Hole burning in chalcogenide glasses: The Quantitative form of the hole relaxation depends solely on the average coordination number of the glass independent of chemical composition. (2) PIRSH Burning of Tb(3+) in Alkaline Earth Fluoride Crystals: These PIRSHs in glassy crystals display the characteristics properties of spectral holes burned in true glasses. (3) NO2(-) Ions in Alkali Halides: Four different kinds of vibrational hole burning have been carried out: (1) the hole and antihole in the same absorption line, (2) the antihole removed in frequency from the inhomogeneously broadened line, (3) multiple antiholes and (4) the burning at one vibrational mode frequency while monitoring the persistent changes produced in the other internal (IR) or external (FIR) modes with a high resolution FT interferometer. (4) Calculations and Simulations of Vibrational Solitons in Crystals: The stationary localized mode results for perfect anharmonic crystals are reminiscent of the defect induced local modes studied in the harmonic approximation. (5) KI:Ag(+) Vibrational Dynamics: First Evidence for Vibrational Solitons: The silver ion in KI is the most thermally unstable lattice-defect combination known. It may result from localized anharmonic modes being released into the lattice.

• Research Organization: Minnesota Univ., Minneapolis, MN (United States). Dept. of Computer Science
• OSTI ID: 5906371
• Report Number(s): AD-A-266744/2/XAB; CNN: DAAL03-90-G-0040
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHALCOGENIDES
CRYSTAL DEFECTS
OPTICAL PUMPING
CRYSTALS
ALKALI METAL COMPOUNDS
ANHARMONIC CRYSTALS
EXPERIMENTAL DATA
FAR INFRARED RADIATION
FLUORIDES
GLASS
POTASSIUM IODIDES
SOLITONS
TERBIUM IONS
CHARGED PARTICLES
CRYSTAL STRUCTURE
DATA
ELECTROMAGNETIC RADIATION
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
INFRARED RADIATION
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
IONS
NUMERICAL DATA
PHOSPHORS
POTASSIUM COMPOUNDS
PUMPING
QUASI PARTICLES
RADIATIONS
360602* - Other Materials- Structure & Phase Studies
661300 - Other Aspects of Physical Science- (1992-)