Abstract
A theoretical approach, based on the paraxial wave equation and the Fresnel integral, are presented to investigate nonlinear hot-image formation of an intense laser beam. Fresnel-zone-plate-like hologram induced by the sum of a wave scattered from a small scatterer and a background wave produces the negative first order diffracted wave (conjugative wave) that is focused to an traditional hot-image, and the negative second order diffracted wave that develops to an intense second-order hot-image. It is seen by the analytical results that the two images may attain a high intensity level enough to damage optical components in high-power lasers, showing that these two images should be equally taken into account for large lasers optimization of system design.
| Original language | English |
|---|---|
| Article number | 60281Z |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 6028 |
| DOIs | |
| State | Published - 2005 |
| Event | ICO20: Lasers and Laser Technologies - Changchun, China Duration: 21 Aug 2005 → 26 Aug 2005 |
Keywords
- High-power lasers
- Holographic imaging
- Hot-image
- Laser damage
- Self-focusing
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