- AutorIn
- Hannes Radner Technische Universität Dresden, Laboratory for Measurement and Sensor System Techniques, Faculty of Electrical and Computer Engineering, Dresden, Germany
- Lars BüttnerTechnische Universität Dresden, Laboratory for Measurement and Sensor System Techniques, Faculty of Electrical and Computer Engineering, Dresden, Germany
- Jürgen CzarskeTechnische Universität Dresden, Laboratory for Measurement and Sensor System Techniques, Faculty of Electrical and Computer Engineering, Dresden, Germany
- Titel
- Interferometric velocity measurements through a fluctuating interface using a Fresnel guide star-based wavefront correction system
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-717629
- Quellenangabe
- Optical Engineering Herausgeber: Brian W. Pogue
Erscheinungsort: Bellingham, Wash.
Verlag: SPIE
Erscheinungsjahr: 2018
Jahrgang: 57
Heft: 8
Seiten: 084104-1-084104-7
E-ISSN: 1560-2303 - Erstveröffentlichung
- 2018
- Abstract (EN)
- To improve optical measurements, which are degraded by optical distortions, wavefront correction systems can be used. Generally, these systems evaluate a guide star in transmission. The guide star emits wellknown wavefronts, which sample the distortion by propagating through it. The system is able to directly measure the distortion and correct it. There are setups, where it is not possible to generate a guide star behind the distortion. Here, we consider a liquid jet with a radially open surface. A Mach–Zehnder interferometer is presented where both beams are stabilized through a fluctuating liquid jet surface with the Fresnel guide star (FGS) technique. The wavefront correction system estimates the beam path behind the surface by evaluating the incident beam angle and reflected beam angle of the Fresnel reflex with an observer to control the incident angle for the desired beam path. With this approach, only one optical access through the phase boundary is needed for the measurement, which can be traversed over a range of 250 μm with a significantly increased rate of valid signals. The experiment demonstrates the potential of the FGS technique for measurements through fluctuating phase boundaries, such as film flows or jets.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift 'Optical Engineering' erschienen ist.
DOI: 10.1117/1.OE.57.8.084104 - Freie Schlagwörter (DE)
- Laser-Doppler-Geschwindigkeitsmessung; adaptive Optik; Wellenfrontkompensation; Fresnel-Leitstern
- Freie Schlagwörter (EN)
- laser Doppler velocimetry; adaptive optics; wavefront compensation; Fresnel guide star
- Klassifikation (DDC)
- 530
- 610
- Verlag
- SPIE, Bellingham, Wash.
- Förder- / Projektangaben
- Deutsche Forschungsgemeinschaft Reinhart Koselleck
ID:  CZ 55/30 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-717629
- Veröffentlichungsdatum Qucosa
- 01.09.2020
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis