دراسة طيفية لنقلِ الطاقةِ و العملياتِ المتنافسةِ في أصباغِ الليزر (آومارين 522 و رودامين 101)‎

Abstract EN

The transfer of excitation energy between the molecules of compounds is an effective and important phenomenon in extensive application, and particularly in the development of dye laser.

The energy transfer between two lasing compound, Coumarin 522 (donor) and Rhodamine 101 (acceptor) has been investigated in order to achieve the operational conditions for efficient lasing at desired wavelengths.

Absorption spectrum of each compound of different concentrations (10-4-10-6) molarty with ethanol at room temperature were measured prior to and after mixing.

Wide absorption spectral bandwidth was observed in the mixture that increasing concentration shifts the absorption spectrum peak towards longer wavelengths.The maximum absorption bandwidths in the mixture ranging between (340-650)nm were obtained at concentrations (10-4) molarty for each compound with a mixing ratio (1:1) depending on the donor concentrations.

This range provides a wide – scale pumping source for lasers.