Population inversion of molecular nitrogen in an Ar: N mixture by selective resonance-enhanced multiphoton ionization
Journal of Applied Physics, ISSN: 0021-8979, Vol: 110, Issue: 8
2011
- 45Citations
- 23Captures
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Article Description
Resonance-enhanced multiphoton ionization (REMPI) is shown to offer an attractive strategy for population inversion of molecular nitrogen in an Ar: N gas mixture. We present a detailed analysis of the key processes leading to a population inversion of molecular nitrogen in a REMPI-pumped Ar: N gas mixture, including a (3 + 1) REMPI of argon atoms, conversion of the REMPI-generated atomic argon ions into molecular ions, and generation of long-lived metastable excited-state argon atoms through dissociative recombination, populating the Cπ states of molecular nitrogen. Population inversion achieved for the second-positive-band laser transitions of molecular nitrogen enables stimulated emission of ultraviolet radiation at 337 nm. A high selectivity of the REMPI process helps to radically reduce the depletion of the working medium through the ionization of N , providing a pump mechanism that is ideally suited for the creation of a new type of a highly efficient nitrogen laser. © 2011 American Institute of Physics.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=80655139308&origin=inward; http://dx.doi.org/10.1063/1.3646478; https://pubs.aip.org/jap/article/110/8/083112/954126/Population-inversion-of-molecular-nitrogen-in-an; http://scitation.aip.org/content/aip/journal/jap/110/8/10.1063/1.3646478; http://scitation.aip.org/limit_exceeded.html
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