| DOI | Resolve DOI: https://doi.org/10.1063/1.1944223 |
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| Author | Search for: Hnatovsky, C.; Search for: Taylor, R. S.1; Search for: Simova, E.; Search for: Bhardwaj, V. R.; Search for: Rayner, D. M.1; Search for: Corkum, P. B.1 |
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| Affiliation | - National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
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| Format | Text, Article |
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| Subject | spherical aberrations; nonlinear acoustics; silica; refractive index; mode locking |
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| Abstract | An ultrahigh-resolution (20nm) technique of selective chemical etching and atomic force microscopy has been used to study the photoinduced modification in fused silica produced at various depths by tightly focused femtosecond laser radiation affected by spherical aberration. We demonstrate that shapes of the irradiated zones near the threshold for modification can be predicted by taking proper account of spherical aberration caused by the refractive index mismatched air–silica interface. We establish a depth dependence of the pulse energy required to initiate modification and characterize the relationship between numerical aperture of the writing lens and practically achievable writing depth. We also show that spatial characteristics of the laser-modified zones can be controlled by a specially designed focusing system which allows correction for a variable amount of spherical aberration. |
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| Publication date | 2005 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 12339105 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 0895d9d9-89e5-4388-b9b6-284305171396 |
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| Record created | 2009-09-11 |
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| Record modified | 2020-04-07 |
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