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hal.structure.identifierDMPE, ONERA, Université de Toulouse [Mauzac]
dc.contributor.authorMAILLARD, Martin
hal.structure.identifierUniversité de Bordeaux [UB]
dc.contributor.authorAMIARD-HUDEBINE, Gabriel
hal.structure.identifierUniversité de Bordeaux [UB]
dc.contributor.authorTONDUSSON, Marc
hal.structure.identifierDMPE, ONERA, Université de Toulouse [Mauzac]
dc.contributor.authorORAIN, Mikael
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorFREYSZ, Eric
dc.date.created2022-10-24
dc.date.issued2022-12-06
dc.identifier.issn1094-4087
dc.description.abstractEnUsing a wavefront sensor, we have measured the temporal evolution of the lens induced in a Nd:YAG rod amplifier under side pumping by laser diode bars centered around 808 nm in a quasi-continuous wave regime. The evolution of the induced lens is drastically different when measured with a probe pulse centered at 532 nm or 1064.5 nm. To explain this evolution, we developed a model that accounts for both the excited state population of the Nd3+ ions and the thermal contribution to the refractive index of the amplifier. This model, which takes into account amplification and wavelength shift of the probe pulse at 1064.5 nm, makes it possible to quantitatively describe the spectral and temporal evolution of the amplifier focal length. It also shows that the excited state population contribution is more important around 1064.5 nm and can partly compensate for the thermal lens induced in the amplifier.
dc.language.isoen
dc.publisherOptical Society of America - OSA Publishing
dc.subjectBARREAU YAG
dc.subjectLENTILLE THERMIQUE
dc.subjectINFLUENCE TEMPERATURE
dc.subjectCOMPARAISON EXPERIENCE/SIMULATION
dc.subject.enIndex variation
dc.subject.enLaser
dc.subject.enlaser amplifier
dc.subject.enYAG ROD
dc.subject.enTHERMAL LENS
dc.subject.enTEMPERATURE INFLUENCE
dc.subject.enEXPERIMENT/SIMULATION COMPARISON
dc.title.enKinetics and wavelength dependence of thermal and gain lens induced in Nd:YAG rod amplifier
dc.typeArticle de revue
dc.identifier.doi10.1364/OE.478909
dc.subject.halPhysique [physics]/Physique [physics]
dc.subject.halSciences de l'ingénieur [physics]
bordeaux.journalOptics Express
bordeaux.peerReviewedoui
hal.identifierhal-03906476
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03906476v1
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