Time-resolved study of laser emission in nitrogen gas pumped by two near IR femtosecond laser pulses
نویسندگان
چکیده
The time profile of a lasing signal at 391.4 nm emitted by weakly ionized gas nitrogen molecules low pressure is measured under double excitation with intense femtosecond laser pulses 800 nm. An abrupt decrease in emission occurs the arrival second pulse. It explained transfer population from ground to first excited ionic level and disruption coherence, terminating conditions for V-scheme without inversion.
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ژورنال
عنوان ژورنال: Optics Letters
سال: 2021
ISSN: ['1539-4794', '1071-2763', '0146-9592', '1071-8842']
DOI: https://doi.org/10.1364/ol.414863