TY - JOUR
T1 - Mixing up-conversion excitation behaviors in Er3+/Yb 3+-codoped aluminum germanate glasses for visible waveguide devices
AU - Gong, H.
AU - Lin, L.
AU - Zhao, X.
AU - Pun, E. Y B
AU - Yang, D. L.
AU - Lin, H.
PY - 2010/7/30
Y1 - 2010/7/30
N2 - A mixing up-conversion excitation phenomenon in Er3+/Yb 3+-codoped aluminum germanate (Na2O-MgO-Al 2O3-GeO2, NMAG for short) glasses for K +-Na+ ion-exchanged waveguides was observed and characterized. The green and red up-conversion luminescence of Er3+ is due to a two-photon excitation process under low-power excitation of a 974 nm diode laser, however, with increasing the pumping power, the green emission turns to follow a combination of two- and three-photon excitation effects while the red one still agrees with a two-photon excitation law. Under high-power pumping, owing to potential thermal effect, the population ratio between the 2H11/2 and 4S3/2 levels adjusts acutely, which results in a distinct exhibition in 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 emission transitions. Green transmission trace has been observed in K+-Na+ ion-exchanged Er 3+/Yb3+-codoped NMAG glass waveguide and it provides an original reference in developing visible waveguide amplifiers and lasers. © 2010 Elsevier B.V. All rights reserved.
AB - A mixing up-conversion excitation phenomenon in Er3+/Yb 3+-codoped aluminum germanate (Na2O-MgO-Al 2O3-GeO2, NMAG for short) glasses for K +-Na+ ion-exchanged waveguides was observed and characterized. The green and red up-conversion luminescence of Er3+ is due to a two-photon excitation process under low-power excitation of a 974 nm diode laser, however, with increasing the pumping power, the green emission turns to follow a combination of two- and three-photon excitation effects while the red one still agrees with a two-photon excitation law. Under high-power pumping, owing to potential thermal effect, the population ratio between the 2H11/2 and 4S3/2 levels adjusts acutely, which results in a distinct exhibition in 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 emission transitions. Green transmission trace has been observed in K+-Na+ ion-exchanged Er 3+/Yb3+-codoped NMAG glass waveguide and it provides an original reference in developing visible waveguide amplifiers and lasers. © 2010 Elsevier B.V. All rights reserved.
KW - Germanate glasses
KW - Mixing up-conversion process
KW - Rare-earth ions
KW - Visible waveguide
UR - http://www.scopus.com/inward/record.url?scp=77955308825&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-77955308825&origin=recordpage
U2 - 10.1016/j.jallcom.2010.04.216
DO - 10.1016/j.jallcom.2010.04.216
M3 - RGC 21 - Publication in refereed journal
SN - 0925-8388
VL - 503
SP - 133
EP - 137
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1
ER -