Accession Number:

ADA055231

Title:

Multistep Energy Migration and Radiationless Relaxation Processes in Phosphor and Laser Crystals.

Descriptive Note:

Technical rept.,

Corporate Author:

OKLAHOMA STATE UNIV STILLWATER DEPT OF PHYSICS

Personal Author(s):

• Powell,Richard C.

Report Date:

1978-05-16

Pagination or Media Count:

37.0

Abstract:

An extensive investigation of the spectroscopic properties of NdxY1-xP5O14 is reported. Time-resolved site-selection spectroscopy and photoacoustic spectroscopy techniques were used as well as standard optical spectroscopy measurements which were made as a function of Nd concentration, temperature, excitation wavelength and laser power. Results show that Nd ions occupy a variety of slightly perturbed sites. No significant energy transfer appears to be taking place between ions in these inequivalent sites. Additional experimental data presented here suggests a new quenching model for neodymium pentaphosphate crystals based on spatial but non-spectral energy migration to surface quenching sites. Author

Descriptors:

• *SINGLE CRYSTALS
• *LASER MATERIALS
• *NEODYMIUM LASERS
• IONS
• ENERGY TRANSFER
• QUENCHING
• PHONONS
• ATOMIC SPECTROSCOPY
• STOICHIOMETRY

Subject Categories:

• Lasers and Masers
• Crystallography
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE