Photosensitivity of lead germanate glass waveguides grown by pulsed laser deposition

Sakellaris Mailis, Andrew A. Anderson, Stephen J. Barrington, William S. Brocklesby, Robert Greef, Harvey N. Rutt, Robert W. Eason, Nikolaos A. Vainos, Christos Grivas

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

We report very large photoinduced refractive-index changes Δn, of the order of ∼102, in lead germanate glass waveguides grown by pulsed-laser deposition. The magnitude of Δn was derived from measurements of diffraction efficiency for gratings written by exposure to 244-nm light through a phase mask, whereas the sign of Δn was was determined from ellipsometric data. Results are shown for films grown under oxygen pressures ranging from 1 × 10-2 to 6 × 10-2 mbars (1.33 mbars = 1 Torr).

Original languageEnglish
Pages (from-to)1751-1753
Number of pages3
JournalOptics Letters
Volume23
Issue number22
DOIs
Publication statusPublished - 15 Nov 1998
Externally publishedYes

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