Operation of a transversely excited Sr+ recombination laser at buffer gas (He) pressures up to 1300 Torr and discharge current densities up to 103 A/cm2 is reported. Specific energy densities on the λ430.5-nm Sr+ line exceed 50 μJ/cm3 for the 30-cm3 active volume device with no fundamental limitations observed. Double-pulse experiments indicate pulse repetition frequencies near 1 MHz may be possible.
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Butler et al. (1983) studied this question.
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