title: Distributed laser refrigeration.
abstract: A 250-mum-diameter fiber of ytterbium-doped ZBLAN (fluorine combined with Zr, Ba, La, Al, and Na) has been cooled from room temperature. We coupled 1.0 W of laser light from a 1013-nm diode laser into the fiber. We measured the temperature of the fiber by using both fluorescence techniques and a microthermocouple. These microthermocouple measurements show that the cooled fiber can be used to refrigerate materials brought into contact with it. This, in conjunction with the use of a diode laser as the light source, demonstrates that practical solid-state laser coolers can be realized.
authors: A
authors: A
authors: Rayner
authors: M
authors: M
authors: Hirsch
authors: N R
authors: NR
authors: Heckenberg
authors: H
authors: H
authors: Rubinsztein-Dunlop