Coumarin laser dyes have been shown to undergo effkient energy transfer when solubiiized and co-bound to poly( methacrylic acid) (PMAA) in water at pH 3.0. Under these conditions dyes are bound in relative proximity (about 5.0 nm) within microdomains of the polymer in its compact or hypercoloid form
Energy transfer between coumarins in a dye laser
β Scribed by A.J. Cox; Brian K. Matise
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 300 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
An energy transfer laser experunent IS reported m which coumarm I acted as the energy donor and coumarin 31-t as the hsng acceptor
At an optunum concentration of lo-' hI for the coumann I and 10m3 hl for the coumarin 314 in methanol, the mL\ture was Xwice as efficient as a laser than cuumarm 314 alone
π SIMILAR VOLUMES
Kinetic analysis of an energy transfer dye laser is presented. 'lie laser gain function depends on the molecular parameters and on ?he concentrations of both the donor and acceptor. For the lo? signal limit the gain shows linear dependence on either the donor or the acceptor concentrations for a fix
The Iaser and fluorescence behavior was studied for the mixed dye system contairdng various concentrations of 3,3'ðylthiacarbocyanine iodide and rhodamine 6G. A new way of confming the occurrence of energy transfer is presented on the basis of the reabsorption effect.
Laser characteristics of the fust member of a new class of laser dyes with intramolecular enera transfer are reported.
The synergic effects which are generally invoked to account for the specific features of a system of two ketones used as polymerization photoinitiators are reconsidered. The increase in reactivity observed when mixing these two initiators is reinterpreted in terms of a simultaneous energy and electr