Sensor for dynamic focus control of a deformable mirror
- We recently presented a novel unimorph deformable mirror which allows for dynamic focus shift with an actuation rate of 2 kHz. Such mirrors suffer from hysteresis and creep. Therefore, they have to be operated in closed-loop. For this purpose, we developed a defocus sensor based on an astigmatic detection system. In this paper, we present the sensor design and discuss its performance.
Author: | Orestis Kazasidis, Sven Verpoort, Ulrich Wittrock |
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URL: | https://www.osapublishing.org/ao/abstract.cfm?uri=ao-59-18-5625 |
DOI: | https://doi.org/10.1364/AO.392970 |
Parent Title (English): | Appl. Opt. |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2020/08/25 |
Year of first Publication: | 2020 |
Provider of the Publication Server: | FH Münster - University of Applied Sciences |
Release Date: | 2020/08/25 |
Tag: | deformable mirrors; diode lasers; laser beams; laser machining; sensor performance |
Issue: | 59 |
First Page: | 5625 |
Last Page: | 5630 |
Faculties: | Physikingenieurwesen (PHY) |
Publication list: | Wittrock, Ulrich |
Licence (German): | Bibliographische Daten |