title: High-power diode-pumped cryogenically cooled Yb:CaF₂ laser with extremely low quantum defect.
abstract: High-power diode-pumped laser operation at 992-993 nm under a pumping wavelength of 981 of 986 nm is demonstrated with Yb:CaF₂ operating at cryogenic temperature (77 K), leading to extremely low quantum defects of 1.2% and 0.7%, respectively. An average output power of 33 W has been produced with an optical efficiency of 35%. This represents, to the best of our knowledge, the best laser performance ever obtained at such low quantum defects on intense laser lines.
authors.affiliation: Laboratoire Charles Fabry de l'Institut d'Optique, UMR 8501 CNRS, Université Paris Sud, 91127 Palaiseau, France. sandrine.ricaud@institutoptique.fr
authors.forename: S
authors.initials: S
authors.lastname: Ricaud
authors.forename: D N
authors.initials: DN
authors.lastname: Papadopoulos
authors.forename: A
authors.initials: A
authors.lastname: Pellegrina
authors.forename: F
authors.initials: F
authors.lastname: Balembois
authors.forename: P
authors.initials: P
authors.lastname: Georges
authors.forename: A
authors.initials: A
authors.lastname: Courjaud
authors.forename: P
authors.initials: P
authors.lastname: Camy
authors.forename: J L
authors.initials: JL
authors.lastname: Doualan
authors.forename: R
authors.initials: R
authors.lastname: Moncorgé
authors.forename: F
authors.initials: F
authors.lastname: Druon