TY - JOUR
T1 - Near-infrared quantum cutting through a three-step energy transfer process in Nd 3+-Yb 3+ co-doped fluoroindogallate glasses
AU - Borrero-González, L. J.
AU - Nunes, L. A.O.
PY - 2012/9/26
Y1 - 2012/9/26
N2 - The Nd 3+-Yb 3+ couple was investigated in fluoroindogallate glasses using optical spectroscopy to elucidate the energy transfer mechanisms involved in the downconversion (DC) process. Upon excitation of a Nd 3+ ion by an ultraviolet photon, DC through a three-step energy transfer process occurs, in which the energy of the ultraviolet photon absorbed by the Nd 3+ ion is converted into three infrared photons emitted by Yb 3+ ions, i.e.quantum cutting (QC). In addition, with excitation in the visible, our results confirm that the DC process occurs through a one-step energy transfer process, in which the energy of a visible photon absorbed by the Nd 3+ ion is converted into only one infrared photon emitted by an Yb 3+ ion. Time-resolved measurements enabled the estimation of the efficiencies of the cross-relaxation processes between Nd 3+ and Yb 3+ ions.
AB - The Nd 3+-Yb 3+ couple was investigated in fluoroindogallate glasses using optical spectroscopy to elucidate the energy transfer mechanisms involved in the downconversion (DC) process. Upon excitation of a Nd 3+ ion by an ultraviolet photon, DC through a three-step energy transfer process occurs, in which the energy of the ultraviolet photon absorbed by the Nd 3+ ion is converted into three infrared photons emitted by Yb 3+ ions, i.e.quantum cutting (QC). In addition, with excitation in the visible, our results confirm that the DC process occurs through a one-step energy transfer process, in which the energy of a visible photon absorbed by the Nd 3+ ion is converted into only one infrared photon emitted by an Yb 3+ ion. Time-resolved measurements enabled the estimation of the efficiencies of the cross-relaxation processes between Nd 3+ and Yb 3+ ions.
UR - http://www.scopus.com/inward/record.url?scp=84866111129&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/24/38/385501
DO - 10.1088/0953-8984/24/38/385501
M3 - Article
AN - SCOPUS:84866111129
SN - 0953-8984
VL - 24
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 38
M1 - 385501
ER -