Adaptive feedback beam shaping of the CO2 welding laser

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F10%3A00352708" target="_blank" >RIV/68081731:_____/10:00352708 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Adaptive feedback beam shaping of the CO2 welding laser
Original language description
The depth of penetration is probably the most important factor that influences the quality of a laser weld. The depth strongly depends on the focus of the welding beam. The sublimating material forms plasma vapors, that act as a lens and defocus the laser beam. Our contribution presents a method to compensate this phenomenon using an adaptive mirror - a mirror with flexible surface that can adjust the shape of the welding beam. The mirror is regulated by a feedback control loop so that the focus of thelaser beam and the penetration depth remain in an optimal range. Since the only possibility to state the penetration depth is to monitor outer effects to estimate desired parameters. a sensor unit is used to monitor the optical emissions of the plasma vapors and the measured data are inputs to an algorithm that estimates the penetration depth.
Czech name
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Czech description
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Project
<a href="/en/project/2A-3TP1%2F113" target="_blank" >2A-3TP1/113: *Investigetion of dynamics of the laser welding process and its control</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Laser Beam Shaping XI (Proceedings of SPIE Vol. 7789)
ISBN
978-0-8194-8285-3
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
"77890V: 1"-"8"
Publisher name
SPIE
Place of publication
Bellingham
Event location
San Diego
Event date
Aug 2, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000287705600025

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