Title :
Room temperature near-infrared tunable Cr:La/sub 3/Ga/sub 5/SiO/sub 14/ laser
Author :
Lai, Shui T. ; Chai, Bruce H T ; Long, Margaret ; Shinn, Michelle D.
Author_Institution :
Allied-Signal Inc., Morristown, NJ, USA
Abstract :
Laser operation was achieved in a Cr-doped crystal of La/sub 3/Ga/sub 5/SiO/sub 14/. The laser had a free-running wavelength of 960 nm at room temperature from 862 to 1107 nm. Up to 80 mW output power has been measured with 1.5 W of pump power absorbed from a krypton ion laser. The /sup 4/T/sub 2/ fluorescence spectrum showed a peak at 890 nm indicating an unusually large Franck-Condon shift. At room temperature the fluorescence lifetime was 5.3 mu s and the fluorescence quantum yield was measured to be about 14%.<>
Keywords :
chromium; lanthanum compounds; laser transitions; laser tuning; solid lasers; 1.5 W; 5.3 mus; 80 mW; 862 to 1107 nm; Franck-Condon shift; La/sub 3/Ga/sub 5/SiO/sub 14/:Cr; fluorescence lifetime; fluorescence quantum yield; fluorescence spectrum; tunable laser; Absorption; Atmosphere; Chromium; Fluorescence; Laser excitation; Laser tuning; Pump lasers; Solid lasers; Temperature; Tunable circuits and devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
