Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Ferdinand von Alvensleben"'
Publikováno v:
Optics Communications. 148:261-264
We report on the generation of continuously tunable high power radiation near 780 nm by using a travelling wave GaAs/GaAlAs amplifier with a laterally tapered gain region seeded by a low power external cavity diode laser. Stable single frequency oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33d3d18a1ce4d9eb3be9bd5e15b0f15c
https://doi.org/10.1016/s0030-4018(97)00696-2
https://doi.org/10.1016/s0030-4018(97)00696-2
Autor:
Boris N. Chichkov, Stefan Nolte, Carsten Momma, B. Wellegehausen, Andreas Tünnermann, Herbert Welling, Ferdinand von Alvensleben
Publikováno v:
Optics Communications. 129:134-142
Laser ablation of solid targets by Ti:sapphire laser radiation is studied. The solid targets are irradiated by 0.2–5000 ps laser pulses in the intensity range of 10 9 − 5 × 10 16 W cm 2 . Dependences of the ablation depth on the laser pulse ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92835ddd32d09d4dbd14100da356f543
https://doi.org/10.1016/0030-4018(96)00250-7
https://doi.org/10.1016/0030-4018(96)00250-7
Autor:
Boris N. Chichkov, Carsten Momma, Ferdinand von Alvensleben, Andreas Tünnermann, Stefan Nolte
Publikováno v:
CLEO '97., Summaries of Papers Presented at the Conference on Lasers and Electro-Optics.
The advantages of ultrashort laser pulses in material processing has already been demonstrated for a variety of materials.1-3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1033113e3cb915680d5a46c15d08f422
https://doi.org/10.1109/cleo.1997.602397
https://doi.org/10.1109/cleo.1997.602397
Autor:
Klaus Koerber, Christian Kulik, Hans Kurt Toenshoff, Andreas Ostendorf, Ferdinand von Alvensleben
Publikováno v:
Micro-Opto-Electro-Mechanical Systems.
F2 lasers emitting radiation with a wavelength (lambda) equals 157 nm allow the direct laser based micro-structuring of materials like PTFE (e.g. Teflon) or quartz glass for MST-applications. This paper reports about the fundamental basis of controll
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caae6f7d732bda1820d1e21dbf4b5c57
https://doi.org/10.1117/12.397929
https://doi.org/10.1117/12.397929
Autor:
Hans Kurt Toenshoff, Ferdinand von Alvensleben, Oliver Hillers, Andreas Ostendorf, Matthias Stallmach
Publikováno v:
SPIE Proceedings.
Simultaneous to the rapid evolution of laser welding, with increased improvements concerning reliability and effectiveness, the need for quality control has grown. The development of system which monitor process quality online, and detect faulty weld
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecd45b2d668ef66e3454c503169436db
https://doi.org/10.1117/12.371170
https://doi.org/10.1117/12.371170
Publikováno v:
SPIE Proceedings.
Light scattering of optical laser components gains in importance for the short wavelength range. A standard procedure for the measurement of 'total scattering' is described in the Draft International Standard ISO/DIS 13696, which is based on integrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bb2dec1ac61af7c48012d4f6aba3c8e
https://doi.org/10.1117/12.344390
https://doi.org/10.1117/12.344390
Autor:
Guido Willmann, Hans Kurt Toenshoff, Thilo Wagner, Ferdinand von Alvensleben, Andreas Ostendorf
Publikováno v:
SPIE Proceedings.
This paper gives a survey of the possibilities and limitations concerning precision laser machining of different materials used in microsystems. The presented investigations were performed using 193 nm and 248 nm excimer, frequency converted Nd:YAG a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72c06d30e0255275d49f1d385c5d6870
https://doi.org/10.1117/12.341243
https://doi.org/10.1117/12.341243
Publikováno v:
SPIE Proceedings.
Using CAD-CAM software tools in a production chain from the design to the NC code generation and manufacturing of workpieces is state of the art in common technologies such as milling or turning. Today these software tools are equipped with intellige
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b37f75f88ce4770b6b0eff307fde9062
https://doi.org/10.1117/12.341218
https://doi.org/10.1117/12.341218
Publikováno v:
SPIE Proceedings.
The increasing demand for highly developed ceramic materials for various applications calls for innovative machining technologies yielding high accuracy and efficiency. Associated problems with conventional, i.e. mechanical methods, are unacceptable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16d0f4c029c5a8c9eed976a22ae9c209
https://doi.org/10.1117/12.323546
https://doi.org/10.1117/12.323546
Publikováno v:
SPIE Proceedings.
Rapid solidification of aluminum alloys during the remelting process using high power laser radiation results in refined effects of the solidified grain texture and improved wear resistance and material hardness. High temperature gradients can be ach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::697649bb94d515615270a542975cc931
https://doi.org/10.1117/12.323545
https://doi.org/10.1117/12.323545