Abstract
We have proposed a sawtooth photonic crystal formed by Si-SiO2 periodic layers designed on a planar medium as a polarizer. The polarizer can produce H-polarized light very efficiently because the frequency of E-polarized light is chosen at the photonic band gap but that of H-polarized light at the photonic conduction band. The best polarization ratio is as high as 2.56 x 10(5) : 1 when the normalized frequency a/lambda is 0.24 and the incident angle is about 13 degrees. Highly polarized light can be produced in a normalized frequency range from 0.23 to 0.25, and this can possibly be applied to an LED with a certain bandwidth.
Original language | English |
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Pages (from-to) | 1361-1363 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
DOIs | |
State | Published - 15 Sep 2011 |
Keywords
- Polarization; sawtooth photonic crystal
- FABRICATION