Výsledky vyhledávání - "Martin, Kahle"

Beam shaping and splitting for high-power USP-lasers

Autor: Martin Kahle, Jan Rücker, D. Nodop

Publikováno v: Procedia CIRP. 94:807-811

A spatial light modulator is used to flexibly shape and divide a femtosecond laser beam. The phase masks required for this task are generated by iterative algorithms like the well-known Gerchberg-Saxton-Algorithm (GSA). However, the GSA tends to gene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16c7dc94705a6bc17743ac91379b83b7
https://doi.org/10.1016/j.procir.2020.09.125

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Glass-welding with USP-lasers and long working distances

Autor: Martin Kahle, Paul Wiemuth, D. Nodop

Publikováno v: Eighth European Seminar on Precision Optics Manufacturing.

The joining of optical glasses is a challenge even with the latest technology. Welding with ultrashort pulsed lasers is a way to join similar or dissimilar glasses without additives or macroscopic thermal tensions. The laser beam is focused through t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d2a280088c9bce9f272a2f848279a98
https://doi.org/10.1117/12.2593590

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Formation of near-surface melt films on glass ceramics due to ultrashort laser pulses

Autor: Martin Kahle, Jens Bliedtner, Maria Friedrich, Jean Pierre Bergmann

Publikováno v: Applied Physics A. 126

Glass ceramics are highly specialized composite materials, which have a partly polycrystalline and a partly glassy state. Due to their special properties such as good mechanical strength, low thermal expansion, and excellent thermal shock resistance,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57b728e158d428b4ae2c7b5bb8f7a44e
https://doi.org/10.1007/s00339-020-04001-7

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Hyperbolic phase function used in a spatial light modulator for flat top focus generation

Autor: Martin Kahle, Jan Ruecker, D. Nodop, Sebastian Waechter

Publikováno v: Optics Letters. 44:2169

We report on a novel transversal beam shaping approach to convert a Gaussian beam to a flat top focus profile by employing a hyperbolic phase function in a liquid crystal on silicon (LCOS) spatial light modulator (SLM). The well-known Powell lens app

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9fd94002592009b0f21f02ce5fc54bf
https://doi.org/10.1364/ol.44.002169

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Efficient burst mode amplifier for ultra-short pulses based on cryogenically cooled Yb³⁺:CaF₂

Autor: Jörg, Körner, Joachim, Hein, Hartmut, Liebetrau, Reinhard, Seifert, Diethard, Klöpfel, Martin, Kahle, Markus, Loeser, Mathias, Siebold, Ulrich, Schramm, Malte C, Kaluza

Publikováno v: Optics express. 21(23)

We present a novel approach for the amplification of high peak power femtosecond laser pulses at a high repetition rate. This approach is based on an all-diode pumped burst mode laser scheme. In this scheme, pulse bursts with a total duration between

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::9940e319fab6b99de1489e86dcb39e4e
https://pubmed.ncbi.nlm.nih.gov/24514416

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Heating of non-ferromagnetic total hip endoprostheses during magnetic resonance imaging in an animal model

Autor: Odo Koester, Alexej Titschert, Robert Drescher, Martin Kahle

Publikováno v: Orthopedics. 29(2)

To determine the heating effects of magnetic resonance imaging (MRI) on non-ferromagnetic total hip endoprostheses, hip endoprostheses were tested in vitro and in an ex vivo animal model. The MRI protocol on a 1.5 T scanner consisted of five sequence

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97a7e59c11f74df992e177f02d0085e4
https://pubmed.ncbi.nlm.nih.gov/16485460

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