title: Role of pump duration on temperature and efficiency of up-conversion in fluoride crystals co-doped with ytterbium and thulium.
abstract: Pump pulse duration is shown to determine the maximum efficiency of the up conversion process in ytterbium, thulium co-doped fluoride crystals through its role in determining the emitter temperature reached. We show that up-conversion efficiencies should only be measured when using the same pumping conditions as would be used in a proposed application and that thermal management of the up converting material is critical to optimized performance.
authors.forename: Alexandra
authors.initials: A
authors.lastname: Rapaport
authors.forename: Janet
authors.initials: J
authors.lastname: Milliez
authors.forename: Michael
authors.initials: M
authors.lastname: Bass
authors.forename: Arlete
authors.initials: A
authors.lastname: Cassanho
authors.forename: Hans
authors.initials: H
authors.lastname: Jenssen