Abstract
A capillary laser with output in the extreme ultra-violet at wavelength 46.9 nm is used to ablate solid targets of parylene-N (CH), PMMA, aluminum and gold. We summarize results obtained using different focusing optics: a Fresnel zone plate, an off-axis spherical multi-layer mirror and on-axis multi-layer and gold mirrors. The Fresnel zone plate has a small aperture and focuses a small fraction of the laser energy to a small diameter (< 1 μm) with peak intensities 6 x 10 9Wcm -2. The off-axis spherical multi-layer mirror allows for a measurement of the transmission of the laser through thin targets, but the off-axis geometry produced an aberrated focus. The on-axis multi-layer mirror allows focusing to intensities of approximately 5 x 10 10 Wcm -2 with a cylindrically symmetric focus.
| Original language | English |
|---|---|
| Title of host publication | X-Ray Lasers and Coherent X-Ray Sources |
| Subtitle of host publication | Development and Applications XIII |
| Editors | Annie Klisnick, Carmen S. Menoni |
| Publisher | SPIE |
| Number of pages | 7 |
| Volume | 11111 |
| ISBN (Electronic) | 9781510629165 |
| ISBN (Print) | 9781510629158 |
| DOIs | |
| Publication status | Published - 9 Sept 2019 |
| Externally published | Yes |
| Event | SPIE Optical Engineering + Applications - San Diego Convention Center, San Diego, United States Duration: 11 Aug 2019 → 15 Aug 2019 Conference number: 13 |
Publication series
| Name | Proceedings of SPIE |
|---|---|
| Publisher | SPIE |
| Volume | 11111 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 1996-756X |
Conference
| Conference | SPIE Optical Engineering + Applications |
|---|---|
| Country/Territory | United States |
| City | San Diego |
| Period | 11/08/19 → 15/08/19 |