Visible anisotropic deformation of chalcogenide glass by optical force

✍ Scribed by Tanaka, Keiji ;Terakado, Nobuaki ;Saitoh, Akira

• Book ID: 105365324
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 568 KB
• Volume: 206
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200881349

✦ Synopsis

Abstract

Semi‐free As~2~S~3~ glass flakes undergo sub‐mm scale anisotropic deformation upon illumination of linearly‐polarized cw bandgap light. The mechanism has been ascribed to photo‐induced birefringence, optical torque, and photo‐induced fluidity. 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~2~S~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. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)