C.W. Thiel, H. Cruguel, et al.
Physical Review B - CMMP
Self-reversed line shapes have been observed in the low temperature phosphorescence spectrum of 1,4-dibromonaphthalene crystals when the crystals are illuminated by a collimated laser beam. Self-reversal is a consequence of reabsorption of the phosphorescence emission. The precise shape of the self-reversed lines is a very sensitive measure of small changes in the unreabsorbed emission spectrum with respect to the absorption spectrum and energy shifts as small as 1% of the linewidth can be measured. For dibromonaphthalene we attribute these changes to macroscopic variations in strain within the crystal. Numerical calculations of the line shapes based on a simple but realistic model are compared with the experimental line shapes. Copyright © 1976 American Institute of Physics.
C.W. Thiel, H. Cruguel, et al.
Physical Review B - CMMP
R. Wannemacher, R.S. Meltzer, et al.
Journal of Luminescence
D.M. Burland, K.U. Leuven
Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
R.D. Miller, D.M. Burland, et al.
Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics