Abstract
An azo dye functionalized sol-gel material has been designed and synthesized to possess photochromism under a green laser beam illumination control. 10-mW laser illumination with a spot size of 1 mm2 at 532 nm wavelength on the film material was found to result in 6 × 10-4 change in material refractive index. The response time of the material photochromism is around 50 ms (3-dB modulation bandwidth of 20 Hz). Further optical transmission measurements reveal low optical absorption by the film material at 1.55 μm wavelength window. The investigation of a tunable waveguide Bragg grating device with the sol-gel material suggests a new promising platform candidate for the fabrication of all-optical controlled photonic devices.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1375-1380 |
| Number of pages | 6 |
| Journal | Optical Materials |
| Volume | 29 |
| Issue number | 11 |
| DOIs | |
| State | Published - Jul 2007 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Computer Science(all)
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Electrical and Electronic Engineering
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Cite this
Ke, X., Yan, X., Song, S., Li, D., Yang, J. J., & Wang, M. R. (2007). Synthesis and characterization of a photochromic sol-gel material functionalized with azo dye. Optical Materials, 29(11), 1375-1380. https://doi.org/10.1016/j.optmat.2006.06.019