dc.identifier.uri |
http://dx.doi.org/10.15488/10598 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/10675 |
|
dc.contributor.author |
Heinzel, Gerhard
|
|
dc.contributor.author |
Álvarez, Miguel Dovale
|
|
dc.contributor.author |
Pizzella, Alvise
|
|
dc.contributor.author |
Brause, Nils
|
|
dc.contributor.author |
Delgado, Juan José Esteban
|
|
dc.date.accessioned |
2021-03-23T09:46:14Z |
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dc.date.available |
2021-03-23T09:46:14Z |
|
dc.date.issued |
2020 |
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dc.identifier.citation |
Heinzel, G.; Álvarez, M.D.; Pizzella, A.; Brause, N.; Delgado, J.J.E.: Tracking Length and Differential-Wavefront-Sensing Signals from Quadrant Photodiodes in Heterodyne Interferometers with Digital Phase-Locked-Loop Readout. In: Physical Review Applied 14 (2020), Nr. 5, 54013. DOI: https://doi.org/10.1103/PhysRevApplied.14.054013 |
|
dc.description.abstract |
We propose a method to track signals from quadrant photodiodes (QPDs) in heterodyne laser interferometers that employ digital phase-locked loops for phase readout. Instead of separately tracking the four segments from the QPD and then combining the results into length and differential-wavefront-sensing signals, this method employs a set of coupled tracking loops that operate directly on the combined length and angular signals. The benefits are an increased signal-to-noise ratio in the loops and the possibility of adapting the loop bandwidths to the differing dynamical behavior of the signals being tracked, which now correspond to physically meaningful observables. We demonstrate an improvement of up to 6 dB over single-segment tracking, which makes this scheme an attractive solution for applications in precision intersatellite laser interferometry in ultralow light conditions. © 2020 authors. |
eng |
dc.language.iso |
eng |
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dc.publisher |
College Park, MD : American Physical Society |
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dc.relation.ispartofseries |
Physical Review Applied 14 (2020), Nr. 5 |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
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dc.subject |
Heterodyning |
eng |
dc.subject |
Interferometers |
eng |
dc.subject |
Laser interferometry |
eng |
dc.subject |
Laser mode locking |
eng |
dc.subject |
Phase locked loops |
eng |
dc.subject |
Photodiodes |
eng |
dc.subject |
Signal to noise ratio |
eng |
dc.subject |
Wavefronts |
eng |
dc.subject |
Attractive solutions |
eng |
dc.subject |
Differential wavefront sensing |
eng |
dc.subject |
Digital phase locked loops |
eng |
dc.subject |
Dynamical behaviors |
eng |
dc.subject |
Heterodyne interferometer |
eng |
dc.subject |
Heterodyne laser interferometers |
eng |
dc.subject |
Light conditions |
eng |
dc.subject |
Quadrant photodiodes |
eng |
dc.subject |
Underwater acoustics |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Tracking Length and Differential-Wavefront-Sensing Signals from Quadrant Photodiodes in Heterodyne Interferometers with Digital Phase-Locked-Loop Readout |
|
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
2331-7019 |
|
dc.relation.doi |
https://doi.org/10.1103/PhysRevApplied.14.054013 |
|
dc.bibliographicCitation.issue |
5 |
|
dc.bibliographicCitation.volume |
14 |
|
dc.bibliographicCitation.firstPage |
54013 |
|
dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
|