Abstract

Time-averaged spectral line shapes of the a hyperfine component of the Cul 5782-Å line (2D3/22P1/2) from a pulsed high-gain cuprous chloride (CuCl) laser are measured with a high-resolution (±1 mK) Fabry-Perot interferometer. Four operational modes are studied: (1) high-power oscillator; (2) low-power oscillator; (3) oscillator–amplifier combination; and (4) spontaneous-emission source. Two models are used for the oscillator and amplifier: a quasi-steady-state approximation and a gain-switched pulsed model, respectively. The corresponding computed interferograms are fitted to the experimental ones by varying the unsaturated gain g0, saturation and spontaneous-emission parameters, and the temperature and homogeneous FWHM. Use of a common discharge tube enables us to achieve a one–one correspondence between experimental data and laser parameters, whose resulting values agree with those obtained by other methods. Typically, the total average spectral output of the high-power oscillator is ~6.7 W and its g0 value is 0.15 cm−1.

© 1983 Optical Society of America

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