LASER RAMAN SCATTERING STUDIES OF CRYSTALS
Annual technical rept. 15 Jun 1965-15 Jun 1966
JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF PHYSICS
Pagination or Media Count:
Laser excited Raman scattering has been explored as a technique for studying crystals containing impurities, particularly the rare-earth doped crystals widely used as laser materials. Spectra obtained with both an A4880 A laser and a He-Ne 6328 A laser are given for CaF2 and CaWO4 crystals, both pure and doped with various rare earths. To date, the doped crystals studied have either produced strong fluorescence or else given spectra which are indistinguishable from those of the pure crystals. Modification of the instrumentation is discussed which is currently in progress. With the improved apparatus, further efforts are planned to look for electronic Raman structure of the rare earth ions as well as modification of the vibrational Raman structure due to perturbation of the lattice by the impurities.
- Lasers and Masers
- Atomic and Molecular Physics and Spectroscopy