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A compact cylindrical CO2TEA laser

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2 Author(s)
Osche, G. ; U.S. Army Electronics Command, Fort Monmouth, NJ, USA ; Sonntag, H.

A cylindrical discharge scheme which utilizes a fine wire as the central electrode is investigated for compact CO2TEA laser applications. It is found that the strong radial dependence of electrical energy deposition into the plasma, a consequence of the large ratio of outer to inner electrode radii, produces a radial gain profile which is well localized in the center of the discharge tube. This allows for efficient matching of low-order stable optical modes to the active gain region while providing a high degree of mode selectivity in favor of these modes. Oscillation in the TEM01Laguerre-Gaussian mode has been obtained at electrical efficiencies approaching 4 percent.

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Quantum Electronics, IEEE Journal of  (Volume:12 ,  Issue: 12 )