Details
| Original language | English |
|---|---|
| Title of host publication | Laser-Induced Damage in Optical Materials: 2000 |
| Place of Publication | Bellingham |
| Publisher | SPIE |
| Pages | 447-453 |
| Number of pages | 7 |
| ISBN (print) | 0-8194-4036-1 |
| Publication status | Published - 12 Apr 2001 |
| Externally published | Yes |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Publisher | SPIE |
| Volume | 4347 |
| ISSN (Print) | 0277-786X |
Abstract
Previous investigations indicate that oxide-coatings exhibit non-linear absorption phenomena below 200 nm. Hereby, absorption data of Al2O3 thin film coatings has been determined absolutely by laser calorimetry (LCA) at 193 nm in the low fluence regime. As an alternative, on the basis of the pulsed surface thermal lens technique (STL), photothermal measurements allow to determine the absorption relatively at fluence levels both in the subdamage fluence range far from the damage onset and close to the LIDT. By combining the two measurement techniques, the absolute determination of linear as well as multiphoton absorption can be achieved also in the vicinity of the laser damage fluences. This is of crucial interest because the initiation of damage onset can be observed immediately. Absolute absorption data of Al2O3 coatings at different laser fluences stating of some mJoule/cm2 will be presented for the wavelength 193 nm. Thus, the correlation between the increase of absorption and the onset of breakdown can be illustrated impressively. The evaluation and discussion of the experimental results are focused on the degree of non-linearity of the investigated absorption behavior of oxide single layers initiating the optical breakdown of UV oxide coatings.
Keywords
- DUV, Non-linear absorption, Oxide coatings, Photothermal methods, Predamage
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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Laser-Induced Damage in Optical Materials: 2000. Bellingham: SPIE, 2001. p. 447-453 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 4347).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Absolute measurements of non-linear absorption near LIDT at 193 nm
AU - Blaschke, Holger
AU - Ristau, Detlev
AU - Welsch, Eberhard
AU - Apel, Oliver
PY - 2001/4/12
Y1 - 2001/4/12
N2 - Previous investigations indicate that oxide-coatings exhibit non-linear absorption phenomena below 200 nm. Hereby, absorption data of Al2O3 thin film coatings has been determined absolutely by laser calorimetry (LCA) at 193 nm in the low fluence regime. As an alternative, on the basis of the pulsed surface thermal lens technique (STL), photothermal measurements allow to determine the absorption relatively at fluence levels both in the subdamage fluence range far from the damage onset and close to the LIDT. By combining the two measurement techniques, the absolute determination of linear as well as multiphoton absorption can be achieved also in the vicinity of the laser damage fluences. This is of crucial interest because the initiation of damage onset can be observed immediately. Absolute absorption data of Al2O3 coatings at different laser fluences stating of some mJoule/cm2 will be presented for the wavelength 193 nm. Thus, the correlation between the increase of absorption and the onset of breakdown can be illustrated impressively. The evaluation and discussion of the experimental results are focused on the degree of non-linearity of the investigated absorption behavior of oxide single layers initiating the optical breakdown of UV oxide coatings.
AB - Previous investigations indicate that oxide-coatings exhibit non-linear absorption phenomena below 200 nm. Hereby, absorption data of Al2O3 thin film coatings has been determined absolutely by laser calorimetry (LCA) at 193 nm in the low fluence regime. As an alternative, on the basis of the pulsed surface thermal lens technique (STL), photothermal measurements allow to determine the absorption relatively at fluence levels both in the subdamage fluence range far from the damage onset and close to the LIDT. By combining the two measurement techniques, the absolute determination of linear as well as multiphoton absorption can be achieved also in the vicinity of the laser damage fluences. This is of crucial interest because the initiation of damage onset can be observed immediately. Absolute absorption data of Al2O3 coatings at different laser fluences stating of some mJoule/cm2 will be presented for the wavelength 193 nm. Thus, the correlation between the increase of absorption and the onset of breakdown can be illustrated impressively. The evaluation and discussion of the experimental results are focused on the degree of non-linearity of the investigated absorption behavior of oxide single layers initiating the optical breakdown of UV oxide coatings.
KW - DUV
KW - Non-linear absorption
KW - Oxide coatings
KW - Photothermal methods
KW - Predamage
UR - http://www.scopus.com/inward/record.url?scp=0034851988&partnerID=8YFLogxK
U2 - 10.1117/12.425057
DO - 10.1117/12.425057
M3 - Conference contribution
AN - SCOPUS:0034851988
SN - 0-8194-4036-1
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 447
EP - 453
BT - Laser-Induced Damage in Optical Materials: 2000
PB - SPIE
CY - Bellingham
ER -