Abstract

We observed intense green upconversion emission from Tb3+ centered at 546nm due to transition D45F57 in Tb3+/Yb3+ codoped alumino-germano-silicate optical fibers by direct excitation of Yb3+ ions with a laser diode at 976nm. A two-photon cooperative energy transfer upconversion among a pair of Yb3+ donor ions and a Tb3+ acceptor ion are responsible for the observed green emission. Appropriately increasing the concentration of Tb3+ relative to Yb3+ was found to facilitate the energy transfer upconversion process from Yb3+ to Tb3+, while an excess of Tb3+ ions inversely introduced more of the concentration quenching effect and phonon-assistant backward energy transfer from Tb3+ to Yb3+ and, therefore, damaged the observed green emission. The intensity of the observed green emission was found optimum for a concentration ratio of Tb3+ to Yb3+ of 2:1 in alumino-germano-silicate optical glass fibers.

© 2010 Optical Society of America

Full Article  |  PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription