Nonphotochemical hole burning and relaxation dynamics of amorphous solids at low temperature

Technical Report · Fri Dec 20 04:00:00 EST 1991

OSTI ID:6065491

Shu, Luchuan

Nonphotochemcial hole burning (NPHB) is applied to cresyl violet perchlorate (CV) in polyvinyl alcohol (PVOH) films. The results of temperature-dependent NPHB, polarization NPHB, spontaneous hole filing (SPHF) and laser induced hole filling (LIHF) are presented. A new mechanism of NPHB is proposed. The relaxation dynamics of amorphous solids at low temperature is extensively studied and a high degree of positive correlation between hole burning and SPHF has been found. Both NPHB and SPHF can be described with dispersive kinetics theory. A more physically reasonable interpretation of SPHF kinetics is described by a new methodology in which absolute hole filling is considered. The data on absolute hole filling together with the observation of a high degree of positive correlation between the rates of burning and filling indicate that the dominant mechanism for filling is not global spectral diffusion but rather anti-hole reversion.

• Research Organization: Ames Lab., IA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6065491
• Report Number(s): IS-T-1617; ON: DE92005092
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
ALCOHOLS
AMORPHOUS STATE
DOPED MATERIALS
DYNAMICS
ENERGY LEVELS
EXCITED STATES
GAS LASERS
HELIUM-NEON LASERS
HYDROXY COMPOUNDS
LASERS
LINE NARROWING
MATERIALS
MECHANICS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHONONS
POLYMERS
POLYVINYLS
PVA
QUASI PARTICLES
RELAXATION
ULTRALOW TEMPERATURE