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Article dans une revue Advanced Photonics Research Année : 2022

Optically Pumped Terahertz Molecular Laser: Gain Factor and Validation up to 5.5 THz

Résumé

Quantum cascade laser-pumped terahertz (THz) gas lasers are at the edge ofrevolutionizing THz science where powerful yet tunable sources have long beenlacking. Maybe one of the last remaining drawbacks to a wider use of theseinstruments lies in the lack of available databases of potentially lasing transitionsfor users. A new figure of merit, the molecular gain factor is proposed, that allowsto discriminate transitions by their lasing potential. Using this factor, catalogs ofTHz laser lines of ammonia, both 14 NH 3 and 15 NH 3 , up to 10 THz are reported.Demonstration of the use of these two catalogs, and of the pertinence of themolecular gain factor, is made by experimentally observing 32 laser lines of14 NH 3 and 5 lines of 15 NH 3 up to 5.5 THz. Prospects to generalize the use of thismolecular gain factor to a wide range of molecules are discussed
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Dates et versions

hal-03538905, version 1 (21-01-2022)

Licence

Paternité - CC BY 4.0

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Marie-Helene Mammez, Zachary Buchanan, Olivier Pirali, Marie-Aline Martin-Drumel, Joan Turut, et al.. Optically Pumped Terahertz Molecular Laser: Gain Factor and Validation up to 5.5 THz. Advanced Photonics Research, 2022, 3, pp.2100263. ⟨10.1002/adpr.202100263⟩. ⟨hal-03538905⟩
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