New Raman Fibers.

The Raman scattering of light is one of the oldest and most well-studied optical phenomena. It was discovered more than 70 years ago and was named after one of the authors of this discovery. In 1928 C. V. Raman and K. S. Krishnan published the paper in which they described light scattering in liquids, the frequency of the scattering light being less than the frequency of the initial light [1]. The same year Russian physicists G. S. Landsberg and L. I. Mandelstam observed independently a similar light scattering in quartz [2]. [ABSTRACT FROM AUTHOR]