Abstract
In this paper, we will describe the basic mechanisms and dynamics of photorefractivity, and holographic grating formations in dye- and fullerene C60-doped nematic liquid crystal films. The effects are attributed to photo induced molecular axis reorientation in these nematic films. A nonlinear index coefficient n2 of 10-2 cm2/Watt can be obtained in a 25μm thick film, with an applied dc-voltage of -1 volt. In Fullerene C60-doped films, these laser induced gratings can be made permanent and electronically modulated; they can be turned off and on by an ac voltage with response times of ∼ 100 μs and a few ms, respectively.
Original language | English (US) |
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Pages (from-to) | 2-13 |
Number of pages | 12 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 2529 |
DOIs | |
State | Published - Aug 18 1995 |
Event | Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995 - San Diego, United States Duration: Jul 9 1995 → Jul 14 1995 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering