Condensed phase exciplexes for short-wavelength lasers

Gerard Sliwinski; Nikolaus Schwentner

doi:10.1117/12.262928

27 December 1996 Condensed phase exciplexes for short-wavelength lasers

Gerard Sliwinski, Nikolaus Schwentner

Proceedings Volume 3052, Ninth International School on Quantum Electronics: Lasers--Physics and Applications; (1996) https://doi.org/10.1117/12.262928
Event: Ninth International School on Quantum Electronics: Lasers: Physics and Applications, 1996, Varna, Bulgaria

Abstract

Emissions from charge transfer states of rare gas halide RgX molecules in rare gas solids and also of alkali halide ions AX combine the known properties of short wavelength, gas phase excimer lasers with high densities of excited states attainable in the condensed phase. In Ar and Ne crystals binary doped with XeF and F₂ a XeF density of 10¹⁸ cm^-3 is prepared. This high density together with a quantum efficiency close to 1 provides large measured gain coefficients between 11.6 and 2.4 cm^-1 for the D-X, B-X, C-A and D-X transitions of XeF in Ar and Ne solids, respectively. Lasing with quantum efficiencies up to 14 percent occurs and beams of low divergence of 3 mrad are extracted with interferometric cavities.Inhomogeneously broadened spectral profiles and relaxation oscillations are observed in the C-A laser emission of XeF in Ar. Concerning alkali halides the e-beam excitation of Ne and Ar matrices doped with 0.4 to 0.7 percent CsF or CsCl results in the deep UV emissions located at 196.5 nm, 220.3 nm, and 211.2 nm and also at 227 nm which are ascribed to the B²(Sigma) _1/2-X²(Sigma) _1/2 and C²(Pi) _1/2-A²(Pi) _1/2 transitions of the ionic A²⁺X^- states, respectively.

Citation Download Citation

Gerard Sliwinski and Nikolaus Schwentner "Condensed phase exciplexes for short-wavelength lasers", Proc. SPIE 3052, Ninth International School on Quantum Electronics: Lasers--Physics and Applications, (27 December 1996); https://doi.org/10.1117/12.262928

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