title: Multicolor diode-pumped upconversion fiber laser.
abstract: We present a new method to control the power of individual spectral components of a multicolor laser by mirrors with variable air gaps and by a composite resonator configuration. We demonstrate a Pr/Yb-ZBLAN fiber laser with arbitrary spectral composition of three simultaneously emitted components at 492 nm, 520 nm, and 635 nm. With 100 mW pump power at 850 nm launched into the fiber, the total laser output exceeds 10 mW.
authors.affiliation: Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: Ortwin
authors.initials: O
authors.lastname: Hellmig
authors.forename: Stefan
authors.initials: S
authors.lastname: Salewski
authors.forename: Arnold
authors.initials: A
authors.lastname: Stark
authors.forename: Jörg
authors.initials: J
authors.lastname: Schwenke
authors.forename: Peter E
authors.initials: PE
authors.lastname: Toschek
authors.forename: Klaus
authors.initials: K
authors.lastname: Sengstock
authors.forename: Valery M
authors.initials: VM
authors.lastname: Baev
mesh_terms: D003116:Color; D004566:Electrodes; D007834:Lasers; D013050:Spectrometry, Fluorescence