Zobrazeno 1 - 10
of 51
pro vyhledávání: '"T. Fricke-Begemann"'
Publikováno v:
Applied Physics A. 117:13-18
Substoichiometric silicon oxide SiOx with x 105 cm−1 in the deep UV below 250 nm, comparable to strongly absorbing polymers such as polyimide. This enables precise ablation with, e.g., excimer lasers at moderate fluences. For example, UV-transparen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d1830cd73cc8018ab0fb3b7e300cc93
https://doi.org/10.1007/s00339-014-8236-3
https://doi.org/10.1007/s00339-014-8236-3
Publikováno v:
Physics Procedia. 56:927-932
Silicone (polydimethylsiloxane) films are irradiated with a nanosecond F2-laser at a wavelength of 157 nm. Low fluence irradiation < 100 mJ/cm2 causes elimination of the organic groups leading to the formation of silica like material. Irradiation at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc02a4a1d9403c708cd96b45d65da278
https://doi.org/10.1016/j.phpro.2014.08.112
https://doi.org/10.1016/j.phpro.2014.08.112
Publikováno v:
Optics Express. 27:28902
Diffractive surface patterns with complex textures are generated on metal surfaces by picosecond UV laser ablation using an interference setup. Two diffraction gratings with variable distance and rotation angle provide a huge variety of interference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d8ac1f3af2f8482e5ac4ac59c83d38f
https://doi.org/10.1364/oe.27.028902
https://doi.org/10.1364/oe.27.028902
Publikováno v:
Applied Surface Science. 261:68-74
Pulsed laser irradiation of 3 μm thick silicone films at 157 nm below and above the ablation threshold of about 100 mJ/cm 2 has been investigated. Significantly above the ablation threshold, clean material removal is observed. Irradiation below thre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6189b75aae9c538c82d4969b04fd7444
https://doi.org/10.1016/j.apsusc.2012.04.181
https://doi.org/10.1016/j.apsusc.2012.04.181
Autor:
J. Ihlemann, T. Fricke-Begemann
Publikováno v:
Optics Express. 26:23751
Fresnel lenses are fabricated directly upon the end face of gradient index (GRIN) lenses by F2-laser machining at 157 nm wavelength. The employed laser processing technique combines a mask projection configuration at 25-x demagnification with a rotat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63d00e7fa7f747a7cd7ed89eacf82141
https://doi.org/10.1364/oe.26.023751
https://doi.org/10.1364/oe.26.023751
Autor:
T. Fricke-Begemann, G. Marowsky, J.S. Aitchison, Peter R. Herman, J. Ihlemann, J. Dou, Jianzhao Li
Publikováno v:
Applied Physics A. 91:591-594
Focussing of the output beam of optical fibers is required in a variety of applications. We present a laser micro-machining technique for the fabrication of micro-lenses directly on the end face of single-mode silica fibers using a F2-laser processin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fa6237d761282db9b09a952360fb0fd
https://doi.org/10.1007/s00339-008-4425-2
https://doi.org/10.1007/s00339-008-4425-2
Publikováno v:
Journal of Physics: Conference Series. 59:691-695
A deep ultraviolet F2 laser, with output at 157-nm wavelength, has been adopted for micro-shaping the end facets of single and multi-mode silica optical fibres. The high energy 7.9-eV photons drive strong interactions in the wide-bandgap silica fibre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d8527d8488edb2937a0ab3719f0b2e4
https://doi.org/10.1088/1742-6596/59/1/146
https://doi.org/10.1088/1742-6596/59/1/146
Giant enhancement of two-photon fluorescence induced by resonant double grating waveguide structures
Publikováno v:
Applied Physics B. 79:531-534
We report a 350-fold enhancement of ultra-short-pulse-excited two-photon fluorescence (TPF) using a resonant double grating waveguide structure (DGWS). These structures show vanishing transmission and maximum reflection under resonance conditions, i.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40cbd5c62f898f3f445eb19eb6ae291d
https://doi.org/10.1007/s00340-004-1629-9
https://doi.org/10.1007/s00340-004-1629-9
Publikováno v:
Clinical and Biomedical Spectroscopy.
Using planar waveguides as a platform for optical biosensors allows an efficient and selective fluorescence excitation in close proximity to the waveguide surface. Usually, the fluorescence light that is emitted in the space above the sensor chip is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3511a2225737d6df55742a88cc82bd30
https://doi.org/10.1364/ecbo.2009.7368_28
https://doi.org/10.1364/ecbo.2009.7368_28
Publikováno v:
Journal of Applied Physics. 118:124308
Silicon nanocrystals have been generated by laser induced phase separation in SiOx films. A continuous wave laser emitting at 405 nm is focused to a 6 μm diameter spot on 530 nm thick SiOx films deposited on fused silica substrates. Irradiation of l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20e15dd9aad4606156f329f7e3fcb668
https://doi.org/10.1063/1.4931670
https://doi.org/10.1063/1.4931670