Fluorescence and lasing of neutral nitrogen molecules inside femtosecond laser filaments in air: mechanism and applications

Author:

Mei Haicheng1,Jiang Hongbing2ORCID,Houard Aurélien3ORCID,Tikhonchuk Vladimir45ORCID,Oliva Eduardo67ORCID,Mysyrowicz André3,Gong Qihuang2,Wu Chengyin2ORCID,Liu Yi18

Affiliation:

1. Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China

2. State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China

3. Laboratoire d’Optique Appliquée, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, Palaiseau Cedex 91762, France

4. Centre Lasers Intenses et Applications, University of Bordeaux-CNRS-CEA, Talence Cedex 33405, France

5. Extreme Light Infrastructure ERIC, ELI Beamlines Facility, Dolní Břežany 25241, Czech Republic

6. Departamento de Ingeniería Energética, ETSI Industriales, Universidad Politécnica de Madrid, Madrid 28006, Spain

7. Instituto de Fusión Nuclear “Guillermo Velarde”, Universidad Politécnica de Madrid, Madrid 28006, Spain

8. CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China

Abstract

High power femtosecond laser pulses launched in air undergo nonlinear filamentary propagation, featuring a bright and thin plasma channel in air with its length much longer than the Rayleigh length of the laser beam.

Funder

National Natural Science Foundation of China

Fundación BBVA

Ministerio de Ciencia e Innovación

National Key Research and Development Program of China

European Commission

Publisher

Royal Society of Chemistry (RSC)

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