| Autor: |
Bookless, W. A., Hrubesh, L. W., Stevens, C. G., Rinehart, E. A. |
| Zdroj: |
International Journal of Infrared and Millimeter Waves; March 1982, Vol. 3 Issue: 2 p171-187, 17p |
| Abstrakt: |
We report the generation of tunable far-infrared radiation by the optical pumping of potassium metal vapor to the13p Rykberg state. Subsequent cascade by stimulated emission is measured at several wavelengths between 76 and 146 cm-1 with a conversion quantum efficiency of greater than 10 percent. Emission observed in this region are tuned up to 18 GHz by the application of a pulsed Stark field across a parallel-plate heat pipe. Cascade branching to the 11d to 10f transition at 146 cm-1 is observed which can be tuned up to 7 cm-1 in our device. Similar branching following excitation up to the 18 p state is shown to provide almost complete tunability in the far-infrared region. |
| Databáze: |
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| Externí odkaz: |
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