Premium
Effect of Yb 3+ ‐Codoping on the Upconversion Emission Intensity in Er 3+ ‐Doped ZBLAN Fluoride Glasses under 800‐nm Excitation
Author(s) -
Inoue Satoru,
Nukui Akihiko,
Soga Kohei,
Makishima Akio
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb04616.x
Subject(s) - zblan , photon upconversion , materials science , excited state , analytical chemistry (journal) , excitation , fluoride , doping , emission intensity , inorganic chemistry , atomic physics , chemistry , optoelectronics , wavelength , fiber laser , physics , chromatography , electrical engineering , engineering
The effect of Yb 3+ ‐codoping on the upconversion emission intensity in Er 3+ ‐doped ZBLAN fluoride glasses is investigated. The codoping of Yb enhanced the emission intensity for the samples excited by an 800‐nm laser diode beam. The enhancement in a constant YbF 3 content (2 mol%) increased with increasing ErF 3 content was about 70% of the initial value at 550 nm for the glasses containing 8 mol% of ErF 3 . The emission intensity at 550 nm in a constant ErF 3 content (5 mol%) increased remarkably with the addition of YbF 3 and was maximized around 7 mol% of YbF 3 content, giving an increased ratio of about 200% of the initial value. The reason for the enhancement is discussed and it is derived mainly from two‐step excitation of Er 3+ assisted by Yb 3+ excited through the energy transfer from Er 3+ .