Abstract
In this paper we compare two techniques to design diffractive gratings with periods close to the wavelength of the illumination beam. The first method, based on the Rayleigh method, is faster and allows good results if grating period is more than 1.2 bigger than the wavelength. The second method, known as Fourier Modal Method, is more precise but also requires a longer calculation time. Results obtained from the computer simulations and experiments are presented for gratings with 0.750 μm and 1.5 μm period illuminated by a collimated wave with 0.633 μm wavelength.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 147-154 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5227 |
| State | Published - 2003 |
| Externally published | Yes |
| Event | Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies - Bucharest, Romania Duration: Nov 21 2002 → Nov 23 2002 |
Keywords
- Binary gratings
- Fourier Modal Method
- Rayleigh method
- Resonance domain
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering