Photosensitivity of lead germanate glass waveguides grown by pulsed laser deposition

Photosensitivity of lead germanate glass waveguides grown by pulsed laser deposition

We report very large photoinduced refractive-index changes Dn, of the order of ~10(2), in lead germanate glass waveguides grown by pulsed-laser deposition. The magnitude of Dn was derived from measurements of diffraction efficiency for gratings written by exposure to 244-nm light through a phase mas...

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Veröffentlicht in:Optics letters 1998-11, Vol.23 (22), p.1751-1753
Hauptverfasser: Mailis, S, Anderson, A A, Barrington, S J, Brocklesby, W S, Greef, R, Rutt, H N, Eason, R W, Vainos, N A, Grivas, C
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container_end_page 1753
container_issue 22
container_start_page 1751
container_title Optics letters
container_volume 23
creator Mailis, S
Anderson, A A
Barrington, S J
Brocklesby, W S
Greef, R
Rutt, H N
Eason, R W
Vainos, N A
Grivas, C
description We report very large photoinduced refractive-index changes Dn, of the order of ~10(2), in lead germanate glass waveguides grown by pulsed-laser deposition. The magnitude of Dn was derived from measurements of diffraction efficiency for gratings written by exposure to 244-nm light through a phase mask, whereas the sign of Dn was determined from ellipsometric data. Results are shown for films grown under oxygen pressures ranging from 1 chi 10(-2) to 6 chi 10(-2)mbars (1.33mbars=1 Torr).
doi_str_mv 10.1364/OL.23.001751
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title Photosensitivity of lead germanate glass waveguides grown by pulsed laser deposition
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