Wittrock, Ulrich
Filtern
Jahr
- 2020 (1) (entfernen)
Publikationstyp
- Beitrag in einer (wissenschaftlichen) Zeitschrift (1) (entfernen)
Schlagworte
- deformable mirrors (1)
- diode lasers (1)
- laser beams (1)
- laser machining (1)
- sensor performance (1)
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.