Infrared (1.2-1.6 microm) luminescence in Cr4+:Yb3Al5O12 single crystal with 940 nm diode pumping.
Infrared (1.2-1.6 microm) luminescence in a ytterbium aluminium garnet (YbAG) crystal, doped with Cr (0.05at.%) ions, was investigated under CW laser diode pumping (lambda=940 nm). The Cr4+ emission band was observed with its peak at 1.34 microm and measured to be about 1.3 times with respect to Yb3+ IR luminescence (lambda=1.03 microm). We demonstrate that for the excitation wavelength of 940 nm Yb3+ ions act as sensitizers of the 3B2(3T2)-3B1(3A2) emission of Cr4+ ions. This crystal is promising as a high-efficient system for tunable laser (1.2-1.6 microm) output.
Xu
Xiaodong
X
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800, People's Republic of China.
Zhao
Zhiwei
Z
Song
Pingxin
P
Zhou
Guoqing
G
Xu
Jun
J
Deng
Peizhen
P
Bourdet
Gilbert
G
Chanteloup
Jean Christophe
JC
Zou
Ji-Ping
JP
Fulop
Annabelle
A
D000535:Aluminum / Q000737:chemistry*; D017608:Chromium Compounds / Q000737:chemistry*; D003460:Crystallization; D008163:Luminescent Measurements; D013050:Spectrometry, Fluorescence; D013057:Spectrum Analysis; D015018:Ytterbium / Q000737:chemistry*
D017608:Chromium Compounds; D000535:Aluminum; D015018:Ytterbium