- Titel
- Adaptive flow-field measurements using digital holography
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-351194
- Konferenz
- SPIE BiOS. San Francisco, 28. January - 2. February 2017
- Quellenangabe
- Quantitative Phase Imaging III
Herausgeber: Gabriel Popescu
Herausgeber: YongKeun Park
Erscheinungsort: Bellingham, Wash.
Verlag: SPIE
Erscheinungsjahr: 2017
Bandnummer Schriftenreihe: 10074 - Erstveröffentlichung
- 2017
- Abstract (EN)
- Variations of the optical detection path-length in image correlation based flow-field measurements result in strong errors in position allocation and thus lead to a strong enhancement of the measurement uncertainty of the velocity. In this contribution we use digital holography to measure the wavefront distortion induced by fluctuating phase boundary, employing spatially extended guide stars. The measured phase information is used to correct the influence of the phase boundary in the detection path employing a spatial light modulator. We analyze the potential of guide stars that are reflected by the phase boundary, i.e. the Fresnel reflex, and transmitted. Our results show, that the usage of wavefront shaping enables to strongly reduce the measurement uncertainty and to strongly improve the quality of image correlation based flow-field measurements. The approaches presented here are not limited to application in flow measurement, but could be useful for a variety of applications.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift 'Proceedings of SPIE' erschienen ist.
DOI: 10.1117/12.2252084 - Freie Schlagwörter (DE)
- Adaptive Optik, digitale Holographie, Strömungsfeldmessungen
- Freie Schlagwörter (EN)
- Adaptive optics, digital holography, flow-field measurements
- Klassifikation (DDC)
- 620
- Verlag
- SPIE, Bellingham, Wash.
- Förder- / Projektangaben
- German Research Foundation Reinhart Koselleck project
ID: CZ 55/30 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-351194
- Veröffentlichungsdatum Qucosa
- 30.08.2019
- Dokumenttyp
- Konferenzbeitrag
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
