Abstract
The demonstration of a laser on () transition of Ne-like Ar pumped by capillary discharge is reported in this Letter. A main current of with rise time of was chosen to generate the plasma in a long capillary filling with pressure of Ar as low as , resulting in a gain coefficient of and gain–length product of 11 at . Also observed is a weak laser on () transition of Ne-like Ar at in the same condition. In addition, multiwavelength lasing at 46.9, 69.8, and was simultaneously realized in a capillary discharge plasma column, conditioning the pressure of Ar to .
© 2011 Optical Society of America
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