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Applied Optics

Applied Optics


  • Vol. 15, Iss. 11 — Nov. 1, 1976
  • pp: 2684–2689

Tunable superradiant emission from a planar dye laser

P. Burlamacchi, R. Pratesi, and U. Vanni  »View Author Affiliations

Applied Optics, Vol. 15, Issue 11, pp. 2684-2689 (1976)

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A new, simple scheme to tune a double-pass, superradiant dye laser is reported. A planar cell with a thickness below 100 μm filled with a highly concentrated (4–5 × 10−3-M/liter) solution of Rhodamine 6G in ethanol is used. An unsaturated gain value of 1.7 cm−1 has been measured with flashlamp pumping, and the amplifier has been found to operate at a well saturated regime. Smooth laser linewidths ranging from broadband, gain narrowed values of 10 nm to narrowband values of 8 GHz have been achieved by using appropriate frequency dispersive feedback elements and suitable cell thickness. A 5-GHz output has been observed with a 25-μm gap cell. The absence of a resonant cavity avoids modal structure and ensures improved frequency and intensity stability. The reported configuration should be scalable up as far as output energy is concerned. Simultaneous two-wavelength operation is possible. Pumping with a frequency-doubled Nd-laser should allow a further reduction of the usable cell thickness with narrower output bandwidths.

© 1976 Optical Society of America

Original Manuscript: June 11, 1976
Published: November 1, 1976

P. Burlamacchi, R. Pratesi, and U. Vanni, "Tunable superradiant emission from a planar dye laser," Appl. Opt. 15, 2684-2689 (1976)

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