Abstract
We analyze the fractal (box-counting) dimension of laser beam wandering. The wandering is due to the light travelling across a path filled by laboratory generated turbulence. The laser's centroid position is collected by a continuous position detector - "light-tracker." We determine the box-counting dimension by means of two independent algorithms. The first method calculates the Hurst exponent of each axis, within the fractional Brownian model, and then the fractal dimension is determined applying a theoretical result. For the second one a new algorithm is proposed to estimate it directly. These results are compared.
| Original language | English |
|---|---|
| Article number | 69 |
| Pages (from-to) | 368-372 |
| Number of pages | 5 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5622 |
| Issue number | PART 1 |
| DOIs | |
| State | Published - 2004 |
| Externally published | Yes |
| Event | RIAO/OPTILAS 2004: 5th Iberoamerican Meeting on Optics, and 8th Latin American Meeting on Optics, Lasers, and their Applications; ICO Regional Meeting - Porlamar, Venezuela, Bolivarian Republic of Duration: 3 Oct 2004 → 8 Oct 2004 |
Keywords
- Box-counting dimension
- Fractal dimension
- Lightwave propagation
- Turbulence
- Wandering