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Proceedings Paper

Spectral Characterization Of A Tunable Alexandrite Laser By Rubidium Absorption At 780 Nm
Author(s): Andrew V. Nowak; Burton J. Krohn
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Paper Abstract

Rubidium vapor was used to characterize the output of a tunable, pulsed alexandrite laser operating at 780 nm. Rubidium spectra were obtained at temperatures of 23, 50, 110, and 140°C. Excellent agreement was obtained with computer-synthesized spectra in which laser linewidth was the only free parameter. Each of the twelve hyperfine structure components of the rubidium 52P3/2 52S1/2 transition was represented by a Voigt profile while a Gaussian profile was assumed for the laser pulses. Optimum calculated values for the laser linewidth at a pumping energy 40% above threshold were 0.065 cm-1 and 0.035 cm-1 for the Q-switched pulse and for the free-running train of pulses, respectively. The laser output was found to be spectrally compact with no evidence of energy outside the narrow central feature.

Paper Details

Date Published: 20 November 1985
PDF: 10 pages
Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); doi: 10.1117/12.976125
Show Author Affiliations
Andrew V. Nowak, Los Alamos National Laboratory (United States)
Burton J. Krohn, Los Alamos National Laboratory (United States)

Published in SPIE Proceedings Vol. 0540:
Southwest Conf on Optics '85
Susanne C. Stotlar, Editor(s)

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