“Whoa! It's like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

Linewidths and Thermal Shifts of Spectral Lines in Neodymium-Doped Yttrium Aluminum Garnet and Calcium Fluorophosphate

Measurements in the 4.2-500°K temperature range are reported of the widths, shapes, and thermal shifts of the 1.06- and 0.9-μ lines of the Nd 3 + ions in yttrium aluminum garnet (YAlG) and calcium fluorophosphate. The results are interpreted in terms of phonon-impurity interactions and static crystal strains. The obtained effective Debye temperature of YAlG is compared with the phonon density spectrum deduced from vibronic sidebands of the R lines in YAlG: Cr 3 + . The R → Z 5 and R → Y 6 transitions of YAlG: Nd are observed to shift exceptionally to the higher energies with an increase of temperature. This is tentatively ascribed to the pushing effect of nearby higher-lying manifolds. Comparison of widths of several lines in YAlG: Nd at low temperatures reveals that the fluctuation of the second-degree crystal-field parameters contributes to the inhomogeneous linebroadenings. Discussions are also presented on the suitability of hard crystals with high phonon cutoff frequencies for the laser host materials. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review American Physical Society (APS)

Loading next page...

Sorry, we don't have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now: