Open AccessOptical gain at 1550 nm from colloidal solution of Er^3+-Yb^3+ codoped NaYF_4 nanocubes
Author(s) -
Xiaofeng Liu,
Yingzhi Chi,
Guoping Dong,
E Wu,
Yanbo Qiao,
Heping Zeng,
Jianrong Qiu
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.005885
Subject(s) - materials science , laser , ion , wavelength , optoelectronics , optical amplifier , laser diode , optics , diode , active laser medium , laser power scaling , chemistry , physics , organic chemistry
We demonstrated optical amplification at 1550 nm with a carbon tetrachloride solution of Er(3+)-Yb(3+) codoped NaYF(4) nanocubes synthesized with solvo-thermal route. Upon excitation with a 980 nm laser diode, the nanocube solution exhibited strong near-infrared emission by the (4)I(13/2)-->(4)I(15/2) transition of Er(3+) ions due to energy transfer from Yb(3+) ions. We obtained the highest optical gain coefficient at 1550 nm of 0.58 cm(-1) for the solution with the pumping power of 200 mW. This colloidal solution might be a promising candidate as a liquid medium for optical amplifier and laser at the optical communication wavelength.