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Sharp resonant trapping of fluorescent light R1 in ruby

T. Muramoto, Yukio Fukuda, T. Hashi

Physics Letters AJun 1, 197417 citations

Resonance Absorption of Alpha-Polarized Coherent Radiation by Pink Ruby.

Robert Curtis Mitchell

Jan 1, 19660 citations

Luminescence and Absorption of Excited Ruby

M. D. Galanin, V. N. Smorchkov, Zoya A Chizhikova

Optics and SpectroscopyAug 1, 19650 citations

Absorption and Fluorescence of Ruby Crystal

William Cutler, John Donaghue, Haridas Kumarakura +1 more

The unique optical properties of the ruby crystal that make it effective as a lasing medium were measured using a simple optical setup.Ruby's absorption of visible light was shown to be strongest at 420 and 550 nm, corresponding to its physical appearance as transparent pink.While the ruby crystal was illuminated with a 532 nm green laser, the R-line fluorescence peaked at 693.5 ± 1.1 nm.Finally, the fluorescence lifetime of ruby was measured by pulsing the laser with a signal generator and capturing the decaying fluorescence on a digital oscilloscope using a photodiode.An exponential decay time-constant of 3.6 ± 0.1 ms was obtained, corresponding to the fluorescence lifetime.The unique optical properties of the ruby crystal that make it effective as a lasing medium were measured using a simple optical setup.Ruby's absorption of visible light was shown to be strongest at 420 and 550 nm, corresponding to its physical appearance as transparent pink.While the ruby crystal was illuminated with a 532 nm green laser, the R-line fluorescence peaked at 693.5 ± 1.1 nm.Finally, the fluorescence lifetime of ruby was measured by pulsing the laser with a signal generator and capturing the decaying fluorescence on a digital oscilloscope using a photodiode.An exponential decay time-constant of 3.6 ± 0.1 ms was obtained, corresponding to the fluorescence lifetime.

ASEE Northeast Section MeetingMay 9, 20251 citation

Visual observations of macroscopic inhomogeneous broadening of the R1 line in ruby

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.

Applied Physics LettersSep 15, 19809 citations

Sharp Changes of Fluorescent Light in Ruby as a Function of Applied Magnetic Field

Yukio Fukuda, 孝夫村本, Tsuneo Hashi

A large number of small but sharp changes (increases and decreases) of the R 1 fluorescence in ruby are observed as a function of applied magnetic field between 2 K and 77 K. At liquid helium temperatures, these signals have linewidths much narrower than the inhomogeneous linewidth (∼0.1 cm -1 ) of the R 1 line. All of these signals appear at the fields where the Zeeman splittings in the excited state \bar E ( 2 E ) and the ground state 4 A 2 satisfy an energy-matching condition for simultaneous transitions of two or more ions. Two distinct mechanisms are found to be responsible for the signals: spin-spin cross-relaxation between \bar E ( 2 E ) and 4 A 2 , and resonant self-trapping of the R 1 line. From the temperature dependence of the linewidths of the signals, thermal broadening of \bar E ( 2 E ) is measured below 77 K. Similar signals are observed in the N lines due to energy transfer from isolated ions to pairs.A large number of small but sharp changes (increases and decreases) of the R 1 fluorescence in ruby are observed as a function of applied magnetic field between 2 K and 77 K. At liquid helium temperatures, these signals have linewidths much narrower than the inhomogeneous linewidth (∼0.1 cm -1 ) of the R 1 line. All of these signals appear at the fields where the Zeeman splittings in the excited state \bar E ( 2 E ) and the ground state 4 A 2 satisfy an energy-matching condition for simultaneous transitions of two or more ions. Two distinct mechanisms are found to be responsible for the signals: spin-spin cross-relaxation between \bar E ( 2 E ) and 4 A 2 , and resonant self-trapping of the R 1 line. From the temperature dependence of the linewidths of the signals, thermal broadening of \bar E ( 2 E ) is measured below 77 K. Similar signals are observed in the N lines due to energy transfer from isolated ions to pairs.

Journal of the Physical Society of JapanJul 15, 19813 citations

Sharp line excitation of resonance fluorescence in pink ruby

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Sharp line excitation of resonance fluorescence in pink ruby

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