Highly oriented metal fluoride thin film waveguide articles on a substrate.

摘要

A highly oriented crystalline thin film of specific barium rare earth fluoride materials deposited at low temperatures (240 DEG C) are useful as Upconversion (optical) waveguides. The materials are BLn2F8 or Ba1-xLnxF2+x (with Ln = Y, Yb, Ho, Er, Tm or Pr and with x up to 0.29).