Visible anisotropic deformation of chalcogenide glass by optical force

Keiji Tanaka, Nobuaki Terakado, Akira Saitoh

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Semi-free As 2S 3 glass flakes undergo sub-mm scale anisot ropic deformation upon illumination of linearly-polarized cw bandgap light. The mechanism has been ascribed to photo induced birefringence, optical torque, and photo-induced flu idity. Quantitative measurements demonstrate that generated optical torque is ∼10 -20 Nm under a light intensity of 1 mW. This value combined with measured deformation rates for As 2S 3 cantilevers suggests a related photo-induced fluidity of 10 -1 P -1, which is much more fluidal (∼ten orders) than that reported in the conventional photo-induced fluidity. Reasons for this discrepancy are discussed.

Original languageEnglish
Pages (from-to)892-897
Number of pages6
JournalPhysica Status Solidi (A) Applications and Materials Science
Issue number5
Publication statusPublished - 2009 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry


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