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Two-photon-induced birefringence in polysilanes

✍ Scribed by F.M. Schellenberg; R.L. Byer; R.D. Miller

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 741 KB
Volume: 166
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(90)85039-f

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✦ Synopsis

Chain scission induced by two-photon exposure produces a permanent birefringence in polysilane polymer films, which can be used for the formation of birefringent optical elements. Spectroscopy of the effect for poly( di-n-hexylsilane) reveals an unexpected sharp resonance at 580 nm. A comparison of several polysilanes indicates the effect only occurs in polymers with symmetric or near symmetric sidegroups. Models to explain these observations are introduced and discussed.

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