DocumentCode :
1094513
Title :
Broad-band emission from chromium doped germanium garnets
Author :
Christensen, Hans P. ; Jenssen, Hans P.
Author_Institution :
Massachusetts Institute of Technology, Cambridge, MA, USA
Volume :
18
Issue :
8
fYear :
1982
fDate :
8/1/1982 12:00:00 AM
Firstpage :
1197
Lastpage :
1201
Abstract :
By varying the composition of a series of germanium garnets, it is possible to change the lattice constant of the structure over a wide range, and thus the crystal field. Three Cr-doped germanium garnets (Ca3 Al2 Ge3 O12 , CaY2 Mg2 Ge3 O12 , and MgY2 Mg2 Ge3 O12 ) have been grown as single crystals. Spectroscopic results show that in these garnets the broad-band emission at room temperature is so strong that it totally dominates the 
-line emission. The spectral region covered by emission from these crystals is from 700 nm to more than 1 μm. The room-temperature lifetimes range from 50 to 290μs.
-line emission. The spectral region covered by emission from these crystals is from 700 nm to more than 1 μm. The room-temperature lifetimes range from 50 to 290μs.Keywords :
Infrared lasers; Laser tuning; Solid lasers; Chromium; Crystalline materials; Crystals; Garnets; Germanium; Laser theory; Laser transitions; Optical materials; Solid lasers; Tunable circuits and devices;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1982.1071687
Filename :
1071687
Link To Document :
