Absorption cross sections, saturated vapor pressures, sublimation energies, and evaporation energies of some organic laser dye vapors

Journal Article · Tue Aug 01 04:00:00 EDT 1989 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.457152· OSTI ID:5968989

Schmidt, J; Penzkofer, A

A new technique of transmission measurement of overheated dye vapors is applied to determine absolute absorption cross-section spectra of three active dyes for vapor phase dye lasers. The investigated compounds are 1,4-di(2-(5-phenyloxazolyl))-benzene (POPOP), 1,4-di(2-(4-methyl-5-phenyl-oxazolyl))-benzene (dimethyl-POPOP), and 2,5-diphenylfuran (PPF). The vapor absorption spectra are compared with liquid solution spectra in order to obtain information on the dye--solvent interaction. The saturated vapor densities are determined by transmission measurements after knowing the absolute absorption cross-section spectra. The latent heats of sublimation, evaporation, and melting are derived by analyzing the dependences of the saturated vapor densities on the vapor temperature.

• Research Organization: Naturwissenschaftliche Fakultat II-Physik, Universitat Regensburg, D-8400 Regensburg, Federal Republic of Germany (DE)
• OSTI ID: 5968989
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 91:3; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
DYE LASERS
DYES
ENTHALPY
LASER MATERIALS
LASERS
LIQUID LASERS
MATERIALS
PHYSICAL PROPERTIES
SUBLIMATION HEAT
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
VAPOR PRESSURE
VAPORIZATION HEAT