Abstract
Color-center and micro-explosions are generated in ZBaF15 optical glass by using focused near-IR femtosecond laser pulse with different incident energy. And multiple-explosions are induced in fused silica. The experiments show that the micro-explosions driven in the center of color-center region are observed in ZBaF15 optical glass with high incident energy. With loose focusing, multiple micro-explosions occur in fused silica and ZBaF15 optical glass with a single femtosecond pulse. Based on the self-focusing effect and free-electron plasma defocusing effect induced by femtosecond laser pulse in transparent material, multiple-micro explosions are analyzed in theory. At the same time, the mechanism of refractive index modification, which induced by femtosecond pulse, is discussed too.
| Original language | English |
|---|---|
| Pages (from-to) | 1187-1190 |
| Number of pages | 4 |
| Journal | Guangzi Xuebao/Acta Photonica Sinica |
| Volume | 36 |
| Issue number | 7 |
| State | Published - Jul 2007 |
| Externally published | Yes |
Keywords
- Femtosecond laser pulse
- Multiple micro-explosions
- Plasma defocusing effect
- Self-focusing effect
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