22 April 1993 Novel in-process sensor for high-power laser profile measurement
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Proceedings Volume 1834, Laser Energy Distribution Profiles: Measurement and Applications; (1993) https://doi.org/10.1117/12.143855
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States
Abstract
The presented sensor for monitoring a high-power laser beam is based on an extension to a bending mirror in the beam path. The fraction of the light absorbed by the mirror causes a heat flow into the mirror. The laser beam intensity distribution can be determined by a spatial and temporal resolved measurement of this heat flow (or the resulting temperature gradient). A multi-element thermal detector has been applied onto the mirror surface in the form of a thin film system. The structured sensor film has a thickness of about (lambda) /100 and is embedded in the insulating layers. An additional metallic layer leads to a reflective surface. With this sensor beam characteristics, like the beam position, can be determined. Further applications have been mentioned.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Heiko Falldorf, Heiko Falldorf, Werner P. O. Jueptner, Werner P. O. Jueptner, Gerd Sepold, Gerd Sepold, "Novel in-process sensor for high-power laser profile measurement", Proc. SPIE 1834, Laser Energy Distribution Profiles: Measurement and Applications, (22 April 1993); doi: 10.1117/12.143855; https://doi.org/10.1117/12.143855
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