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Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air
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| Zeitschriftentitel: | Applied Physics Letters |
|---|---|
| Personen und Körperschaften: | |
| In: | Applied Physics Letters, 50, 1987, 16, S. 1030-1032 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
AIP Publishing
|
| Schlagwörter: |
| author_facet |
Koren, G. Koren, G. |
|---|---|
| author |
Koren, G. |
| spellingShingle |
Koren, G. Applied Physics Letters Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air Physics and Astronomy (miscellaneous) |
| author_sort |
koren, g. |
| spelling |
Koren, G. 0003-6951 1077-3118 AIP Publishing Physics and Astronomy (miscellaneous) http://dx.doi.org/10.1063/1.97960 <jats:p>A 248-nm laser pulse of 35 ns duration was split spatially into two beams: a strong beam used to completely ablate in a single pulse 1000- and 5000-Å-thick polyimide films on fused silica substrates, and a weak, time-delayed probe beam directed almost perpendicularly onto the sample through the ablated fragments in order to measure their transmission versus time. When ablating the 1000-Å-thick film at 1.1 J/cm2, a weak attenuation of the probe beam with a maximum value of 10–12% was observed during the laser pulse. Ablation of the 5000-Å-thick film at 4.2 J/cm2 showed a strong attenuation of 83% which lasted for 90 ns from the beginning of the ablating laser pulse and then dropped to 50% at 130 ns. These results indicate increased attenuation of the laser beam as the laser fluence increases, thus explaining the reduced ablation efficiency at high fluences.</jats:p> Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air Applied Physics Letters |
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10.1063/1.97960 |
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AIP Publishing, 1987 |
| imprint_str_mv |
AIP Publishing, 1987 |
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0003-6951 1077-3118 |
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0003-6951 1077-3118 |
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1987 |
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AIP Publishing |
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ai |
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ai |
| series |
Applied Physics Letters |
| source_id |
49 |
| title |
Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_unstemmed |
Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_full |
Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_fullStr |
Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_full_unstemmed |
Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_short |
Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_sort |
temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| topic |
Physics and Astronomy (miscellaneous) |
| url |
http://dx.doi.org/10.1063/1.97960 |
| publishDate |
1987 |
| physical |
1030-1032 |
| description |
<jats:p>A 248-nm laser pulse of 35 ns duration was split spatially into two beams: a strong beam used to completely ablate in a single pulse 1000- and 5000-Å-thick polyimide films on fused silica substrates, and a weak, time-delayed probe beam directed almost perpendicularly onto the sample through the ablated fragments in order to measure their transmission versus time. When ablating the 1000-Å-thick film at 1.1 J/cm2, a weak attenuation of the probe beam with a maximum value of 10–12% was observed during the laser pulse. Ablation of the 5000-Å-thick film at 4.2 J/cm2 showed a strong attenuation of 83% which lasted for 90 ns from the beginning of the ablating laser pulse and then dropped to 50% at 130 ns. These results indicate increased attenuation of the laser beam as the laser fluence increases, thus explaining the reduced ablation efficiency at high fluences.</jats:p> |
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| _version_ | 1792346555623145478 |
| author | Koren, G. |
| author_facet | Koren, G., Koren, G. |
| author_sort | koren, g. |
| container_issue | 16 |
| container_start_page | 1030 |
| container_title | Applied Physics Letters |
| container_volume | 50 |
| description | <jats:p>A 248-nm laser pulse of 35 ns duration was split spatially into two beams: a strong beam used to completely ablate in a single pulse 1000- and 5000-Å-thick polyimide films on fused silica substrates, and a weak, time-delayed probe beam directed almost perpendicularly onto the sample through the ablated fragments in order to measure their transmission versus time. When ablating the 1000-Å-thick film at 1.1 J/cm2, a weak attenuation of the probe beam with a maximum value of 10–12% was observed during the laser pulse. Ablation of the 5000-Å-thick film at 4.2 J/cm2 showed a strong attenuation of 83% which lasted for 90 ns from the beginning of the ablating laser pulse and then dropped to 50% at 130 ns. These results indicate increased attenuation of the laser beam as the laser fluence increases, thus explaining the reduced ablation efficiency at high fluences.</jats:p> |
| doi_str_mv | 10.1063/1.97960 |
| facet_avail | Online |
| finc_class_facet | Physik |
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| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTA2My8xLjk3OTYw |
| imprint | AIP Publishing, 1987 |
| imprint_str_mv | AIP Publishing, 1987 |
| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-D161 |
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| issn_str_mv | 0003-6951, 1077-3118 |
| language | English |
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| physical | 1030-1032 |
| publishDate | 1987 |
| publishDateSort | 1987 |
| publisher | AIP Publishing |
| record_format | ai |
| recordtype | ai |
| series | Applied Physics Letters |
| source_id | 49 |
| spelling | Koren, G. 0003-6951 1077-3118 AIP Publishing Physics and Astronomy (miscellaneous) http://dx.doi.org/10.1063/1.97960 <jats:p>A 248-nm laser pulse of 35 ns duration was split spatially into two beams: a strong beam used to completely ablate in a single pulse 1000- and 5000-Å-thick polyimide films on fused silica substrates, and a weak, time-delayed probe beam directed almost perpendicularly onto the sample through the ablated fragments in order to measure their transmission versus time. When ablating the 1000-Å-thick film at 1.1 J/cm2, a weak attenuation of the probe beam with a maximum value of 10–12% was observed during the laser pulse. Ablation of the 5000-Å-thick film at 4.2 J/cm2 showed a strong attenuation of 83% which lasted for 90 ns from the beginning of the ablating laser pulse and then dropped to 50% at 130 ns. These results indicate increased attenuation of the laser beam as the laser fluence increases, thus explaining the reduced ablation efficiency at high fluences.</jats:p> Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air Applied Physics Letters |
| spellingShingle | Koren, G., Applied Physics Letters, Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air, Physics and Astronomy (miscellaneous) |
| title | Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_full | Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_fullStr | Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_full_unstemmed | Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_short | Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_sort | temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| title_unstemmed | Temporal measurements of photofragment attenuation at 248 nm in the laser ablation of polyimide in air |
| topic | Physics and Astronomy (miscellaneous) |
| url | http://dx.doi.org/10.1063/1.97960 |