title: Liquid-cooled Ti:Sapphire thin disk amplifiers for high average power 100-TW systems.
abstract: In this work, numerical heat transfer simulations of direct water-cooled gain modules for thin disk (TD) Ti:Sapphire (Ti:Sa) power amplifiers are presented. By using the TD technique in combination with the extraction during pumping (EDP) method 100-TW class amplifiers operating around 300 W average power could be reached in the future. Single and double-sided cooling arrangements were investigated for several coolant flow velocities. Simulations which upscale the gain module for multiple kilowatts of average power were also performed for large aperture Ti:Sa disks and for multiple disks with several coolant channels.
authors.forename: R S
authors.initials: RS
authors.lastname: Nagymihaly
authors.forename: H
authors.initials: H
authors.lastname: Cao
authors.forename: D
authors.initials: D
authors.lastname: Papp
authors.forename: G
authors.initials: G
authors.lastname: Hajas
authors.forename: M
authors.initials: M
authors.lastname: Kalashnikov
authors.forename: K
authors.initials: K
authors.lastname: Osvay
authors.forename: V
authors.initials: V
authors.lastname: Chvykov