Analog phase lock between two lasers at LISA power levels

verfasst von: Christian Diekmann, Frank Steier, Benjamin Sheard, Gerhard Heinzel, Karsten Danzmann
Abstract: This paper presents the implementation of an analog optical phase-locked-loop with an offset frequency of about 20MHz between two lasers, where the detected light powers were of the order of 31 pW and 200 μW. The goal of this setup was the design and characterization of a photodiode transimpedance amplifier for application in LISA. By application of a transimpedance amplifier designed to have low noise and low power consumption, the phase noise between the two lasers was a factor of two above the shot noise limit down to 60mHz. The achievable phase sensitivity depends ultimately on the available power of the highly attenuated master laser and on the input current noise of the transimpedance amplifier of the photodetector. The limiting noise source below 60mHz was the analog phase measurement system that was used in this experiment. A digital phase measurement system that is currently under development at the AEI will be used in the near future. Its application should improve the sensitivity.
Externe Organisation(en): Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Typ: Konferenzaufsatz in Fachzeitschrift
Journal: Journal of Physics: Conference Series
Band: 154
ISSN: 1742-6588
Publikationsdatum: 2009
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Physik und Astronomie
Elektronische Version(en): https://doi.org/10.1088/1742-6596/154/1/012020 (Zugang: Offen)

BibTeX

@article{7c12363b15b241f49bb99925aece96bf,
title = "Analog phase lock between two lasers at LISA power levels",
abstract = "This paper presents the implementation of an analog optical phase-locked-loop with an offset frequency of about 20MHz between two lasers, where the detected light powers were of the order of 31 pW and 200 μW. The goal of this setup was the design and characterization of a photodiode transimpedance amplifier for application in LISA. By application of a transimpedance amplifier designed to have low noise and low power consumption, the phase noise between the two lasers was a factor of two above the shot noise limit down to 60mHz. The achievable phase sensitivity depends ultimately on the available power of the highly attenuated master laser and on the input current noise of the transimpedance amplifier of the photodetector. The limiting noise source below 60mHz was the analog phase measurement system that was used in this experiment. A digital phase measurement system that is currently under development at the AEI will be used in the near future. Its application should improve the sensitivity.",
author = "Christian Diekmann and Frank Steier and Benjamin Sheard and Gerhard Heinzel and Karsten Danzmann",
year = "2009",
doi = "10.1088/1742-6596/154/1/012020",
language = "English",
volume = "154",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
note = "7TH INTERNATIONAL LISA SYMPOSIUM ; Conference date: 16-06-2008 Through 20-06-2008",
}