✦ LIBER ✦
A study of spectral and gain characteristics of substituted amino coumarins under nitrogen laser excitation
✍ Scribed by A. Ramalingam; C. Vijila
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 457 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0167-7322
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✦ Synopsis
The absorption, fluorescence and ASE characteristics of three selectively substituted coumarins(LD490,coumarin 540 and coumarin 535) have been investigated in various polar and non-polar organic solvents. The ground state and excited state dipole moment of the dye molecules have been calculated using solvatochromic method. The excited state dipole moment of the rigid molecule LD 490 is very high compared to the non regidised molecules. The gain characteristics of these dyes have been studied for various nitrogen laser power.