dc.contributor
Universitat Politècnica de Catalunya. Departament de Física
dc.contributor
Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers
dc.contributor.author
Plukys, Matas
dc.contributor.author
Gaizauskas, Eugenijus
dc.contributor.author
Gailevicius, Darius
dc.contributor.author
Staliunas, Kestutis
dc.date.issued
2023-04-01
dc.identifier
Plukys, M. [et al.]. Transverse modes and beam spatial quality in microchip lasers. "Physical review, A", 1 Abril 2023, vol. 107, núm. 43505.
dc.identifier
https://hdl.handle.net/2117/387990
dc.identifier
10.1103/PhysRevA.107.043505
dc.description.abstract
We analyze the transverse modes in flat-flat mirror microchip-laser resonators, which occur due to the gain guiding and the thermal lensing. We rigorously calculate the transverse-mode functions, their eigenfrequencies, and their generation-threshold conditions. We apply a plausible assumption that the mode amplitudes in multi-transverse-mode emission are proportional to the individual gain factors of each mode, and we estimate the beam quality factor for the multi-transverse-mode emission. This simple and intuitive approach leads to the beam quality estimations corresponding well to the experimental measurements performed here.
dc.description.abstract
Postprint (published version)
dc.format
application/pdf
dc.publisher
American Physical Society
dc.relation
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.107.043505
dc.rights
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights
Restricted access - publisher's policy
dc.rights
Attribution-NonCommercial-NoDerivatives 4.0 International
dc.subject
Àrees temàtiques de la UPC::Física
dc.subject
Optical pumping
dc.title
Transverse modes and beam spatial quality in microchip lasers
