Proton-transfer laser: gain spectrum and amplification of spontaneous emission of 3-hydroxyflavone
The efficient generations of amplified spontaneous emission (ASE) in 3-hydroxyflavone in methylcyclohexane and p-dioxane solutions at 293 K is reported. This application of excited-state proton-transfer tautomerization approaches an ideal four-level laser system involving four different molecular electronic species in separate electronic states and constitutes a photoinduced chemical laser. The gain coefficient for the ASE (530 nm) of 3-hydroxyflavone in methylcyclohexane (293 K) is calculated to be 10-15. Under similar conditions in our apparatus, the gain coefficient is observed to be in the range 7-9 for a proprietary coumarin laser dye (Molectron 70371-4 C485) and for rhodamine-6G. The tunable range for 3-hydroxyflavone is observed to be 518-545 nm. The peak laser power is comparable with that observed for the coumarin dye.
- Research Organization:
- Florida State Univ., Tallahassee
- DOE Contract Number:
- AS05-78EV05855
- OSTI ID:
- 6222728
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:20; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400500* -- Photochemistry
42 ENGINEERING
420300 -- Engineering-- Lasers-- (-1989)
CHEMICAL LASERS
CHEMICAL REACTIONS
CHEMISTRY
DYE LASERS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EXCITED STATES
FLAVENOIDS
FLAVONES
HYDROXY COMPOUNDS
ISOMERIZATION
LASER RADIATION
LASERS
LIQUID LASERS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMISTRY
RADIATIONS