https://doi.org/10.1051/epjap:2006095
Light collimator made of photonic crystal by partial band gap
1
Department of Physics, Zhenjiang Watercraft College, Zhenjiang, 212003, China
2
Department of Optical Engineering, Jiangsu University, Zhenjiang, 212013, China
Corresponding author: fang_yt1965@sina.com
Received:
12
March
2006
Revised:
21
May
2006
Accepted:
17
June
2006
Published online:
2
September
2006
Basing on finite-difference time-domain method and partial band gap effect of photonic crystal, we obtain collimated light beams from point optical source and two-dimensional photonic crystal structure. The diffusive light with some special frequencies can be collimated and propagate along a special direction within photonic crystal structure. Our study presents a new method to make light collimator.
PACS: 42.70.Qs – Photonic bandgap materials / 41.85.Si – Beam collimators, monochromators / 42.15.Eq – Optical system design
© EDP Sciences, 2006
