Sharp resonant trapping of fluorescent light R1 in ruby

T. Muramoto, T. Hashi

F. Barocchi, M. Mancini, Riccardo Pratesi +1 more

R. W. Hellwarth

Paul E. Jessop, A. Szabó

Observation of sharp spatial variations of the R1 fluorescence of ruby at 5 K resonantly excited by a 1-MHz-linewidth scanning cw dye laser indicates the presence of gross macroscopic strain broadening in Czochralski and Verneuil crystals. The implications of these results in several current studies are discussed.

Arthur G. Szabo

Using resonance ruby-laser excitation, narrowing of the ruby ${R}_{1}$ fluorescence line to width 0.002 ${\mathrm{cm}}^{\ensuremath{-}1}$ at 4.2\ifmmode^\circ\else\textdegree\fi{}K is observed. Absence of spectral diffusion indicates that a short-range interaction rather than earlier postulated multipolar interactions is responsible for energy transfer in concentrated ruby.

Theodore H. Maiman