Low phonon energy gain medium and related active devices

Details Low phonon energy gain medium and related active devices Low phonon energy gain medium and related active devices

2006-02-28

2006-02-28

Hug, Eric (Department: 1731)

Glass manufacturing

Processes

Sol-gel or liquid phase route utilized

C065S017300, C065S029100, C065S029190, C065S901000, C252S584000, C264S621000, C385S141000

Reexamination Certificate

active

07003981

ABSTRACT:
Using sol-gel techniques, an optical gain medium has been fabricated comprising a glass ceramic host material that includes clusters of crystalline oxide material, especially tin oxide, and that is doped with active ions concentrated at the clusters. The active ions are preferentially located at the nanoclusters so that they experience the relatively low phonon energy of the oxide and are insensitive to the phonon energy of the host. A host with a high phonon energy, such as silica, can therefore be used without the usual drawback of reduced carrier lifetimes through enhanced nonradiative decay rates.

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