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 |
|---|---|
| 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 |