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Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Ultra-compact laser beam steering device using holographically formed two dimensional photonic crystal
Xinyuan Dou1, Xiaonan Chen, Maggie Yihong Chen
1Microelectronics Research Center, Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX 78758, USA.
Journal of Nanoscience and Nanotechnology
|April 2, 2010
Summary
This study explores polymer photonic crystals for laser beam steering using the superprism effect. Fabricated crystals achieved a 10-degree beam steering angle with a 30 nm wavelength change.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Photonic crystals offer unique light manipulation properties.
- The superprism effect enables wavelength-dependent beam steering.
Purpose of the Study:
- To theoretically investigate and experimentally fabricate polymer-based photonic crystals for laser beam steering.
- To analyze the superprism effect in these structures.
Main Methods:
- Theoretical analysis using Equifrequency Contour (EFC) analysis.
- Experimental fabrication of 2D photonic crystals using SU8-2007 via holographic interference.
- Measurement of beam steering angles for wavelength variations.
Main Results:
- Demonstrated the superprism effect in polymer photonic crystals.
- Achieved a beam steering angle of 10 degrees for a 30 nm wavelength variation.
Conclusions:
- Polymer-based photonic crystals are viable for laser beam steering applications.
- The superprism effect provides a mechanism for precise wavelength-selective beam control.
