2020
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Isleif, Katharina-Sophie; collaboration ALPS, Virtual Lab Tour - ALPS Vortrag 05.11.2020, (Physikerinnentagung 2020, Hamburg). Abstract | BibTeX @misc{Isleif2020b,
title = {Virtual Lab Tour - ALPS},
author = {Katharina-Sophie Isleif and collaboration ALPS},
year = {2020},
date = {2020-11-05},
abstract = {Virtuelle Labortour durch die HERA-Tunnel West: Mittels optischer Technologien der Gravitationswellendetektoren sollen mit dem Hochpräzision-Experiment „ALPSII" Axion-ähnliche Teilchen am DESY nachgewiesen werden.},
note = {Physikerinnentagung 2020, Hamburg},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
Virtuelle Labortour durch die HERA-Tunnel West: Mittels optischer Technologien der Gravitationswellendetektoren sollen mit dem Hochpräzision-Experiment „ALPSII" Axion-ähnliche Teilchen am DESY nachgewiesen werden. |
Isleif, Katharina-Sophie ALPS II: Any light particle search Vortrag 28.04.2020, (Quantum Universe Day, Cluster of Excellence, University of Hamburg & DESY). BibTeX @misc{Isleif2020,
title = {ALPS II: Any light particle search },
author = {Katharina-Sophie Isleif },
year = {2020},
date = {2020-04-28},
note = {Quantum Universe Day, Cluster of Excellence, University of Hamburg & DESY},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
|
2019
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Isleif, Katharina-Sophie Outreach Talk: Gravitationswellen Vortrag 01.09.2019, (Outreach Talk for Students, In the context of the Cluster "Quantum Universe" of the University of Hamburg). Links | BibTeX @misc{outreachIsleif,
title = {Outreach Talk: Gravitationswellen},
author = {Katharina-Sophie Isleif },
url = {https://katharinasophieisleif.net/wp-content/uploads/2020/07/20200104_GW_outreach.pdf},
year = {2019},
date = {2019-09-01},
note = {Outreach Talk for Students, In the context of the Cluster "Quantum Universe" of the University of Hamburg},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
|
2018
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Isleif, Katharina-Sophie Laser interferometry for LISA & satellite geodesy missions Vortrag 16.05.2018, (PhD defense at the Leibniz Universität Hannover, Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Germany). BibTeX @misc{Isleif2018,
title = {Laser interferometry for LISA & satellite geodesy missions},
author = {Katharina-Sophie Isleif },
year = {2018},
date = {2018-05-16},
note = {PhD defense at the Leibniz Universität Hannover, Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Germany},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
|
2017
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Isleif, Katharina-Sophie Advanced optics for space interferometry Vortrag 30.08.2017, (Evaluation of the International Max Planck Research School (IMPRS), Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Germany). BibTeX @misc{Isleif2017,
title = {Advanced optics for space interferometry},
author = {Katharina-Sophie Isleif },
year = {2017},
date = {2017-08-30},
note = {Evaluation of the International Max Planck Research School (IMPRS), Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Germany},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
|
Isleif, Katharina-Sophie Upscalable optical test mass readout via deep frequency modulation interferometry Vortrag 14.07.2017, (12th Edoardo Amaldi Conference, Pasadena, Kalifornien, USA). BibTeX @misc{Isleif2017b,
title = {Upscalable optical test mass readout via deep frequency modulation interferometry},
author = {Katharina-Sophie Isleif },
year = {2017},
date = {2017-07-14},
note = {12th Edoardo Amaldi Conference, Pasadena, Kalifornien, USA},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
|
2016
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Isleif, Katharina-Sophie The LISA backlink - Comparing optical phase reference systems Vortrag 06.09.2016, (LISA Symposium, ETH, Zurich, Switzerland). BibTeX @misc{Isleif2016b,
title = {The LISA backlink - Comparing optical phase reference systems},
author = {Katharina-Sophie Isleif },
year = {2016},
date = {2016-09-06},
note = {LISA Symposium, ETH, Zurich, Switzerland},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
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Isleif, Katharina-Sophie The journey to noise reduced and ultra stable interferometers Vortrag 01.03.2016, (Deutsch-Physikalische-Gesellschaft Frühjahrestagung, Hannover, Germany). Abstract | BibTeX @misc{Isleif2016c,
title = {The journey to noise reduced and ultra stable interferometers},
author = {Katharina-Sophie Isleif},
year = {2016},
date = {2016-03-01},
abstract = {Laser interferometry achieving pm/$\sqrt{\mathrm{Hz}}$ sensitivities in the mHz-frequency range is the key technology for satellite missions in the area of gravitational wave detection and geodesy, but it requires sophisticated interferometer layouts that suppress classical interferometer noise sources like scattered light, ghost beams, laser frequency noise and misalignments just by design.
We present the recipe for a successful low-noise interferometer construction, starting with a digital design of the interferometer using the C++ library IfoCad, followed by an optimisation in which we are looking at the simulated interferometer data. Different optimisation parameters, like the overall interferometer architecture, the usage of wedged components and the correct positions, are discussed on the basis of two examples: A Mach-Zehnder interferometer used for the test mass readout in future geodesy missions via deep frequency modulation interferometry, and the 3-Backlink-Setup, an experiment for the laser interferometer space antenna (LISA). The interferometer construction combines the manufacture of a template, a thermally stable quasi-monolithic assembly of the components and a Coordinate Measuring Machine.
We compare the simulation with a setup assembled by hand and an optimally designed interferometer.},
note = {Deutsch-Physikalische-Gesellschaft Frühjahrestagung, Hannover, Germany},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
Laser interferometry achieving pm/$sqrt{mathrm{Hz}}$ sensitivities in the mHz-frequency range is the key technology for satellite missions in the area of gravitational wave detection and geodesy, but it requires sophisticated interferometer layouts that suppress classical interferometer noise sources like scattered light, ghost beams, laser frequency noise and misalignments just by design.
We present the recipe for a successful low-noise interferometer construction, starting with a digital design of the interferometer using the C++ library IfoCad, followed by an optimisation in which we are looking at the simulated interferometer data. Different optimisation parameters, like the overall interferometer architecture, the usage of wedged components and the correct positions, are discussed on the basis of two examples: A Mach-Zehnder interferometer used for the test mass readout in future geodesy missions via deep frequency modulation interferometry, and the 3-Backlink-Setup, an experiment for the laser interferometer space antenna (LISA). The interferometer construction combines the manufacture of a template, a thermally stable quasi-monolithic assembly of the components and a Coordinate Measuring Machine.
We compare the simulation with a setup assembled by hand and an optimally designed interferometer. |
2015
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Isleif, Katharina-Sophie Phase modulation techniques for multi-fringe interferometry Vortrag 22.06.2015, (11th Edoardo Amaldi Conference, Gwangju, South Corea). Abstract | BibTeX @misc{Isleif2015,
title = {Phase modulation techniques for multi-fringe interferometry},
author = {Katharina-Sophie Isleif },
year = {2015},
date = {2015-06-22},
abstract = {Experiments for space and ground-based gravitational wave detectors often require large dynamic range interferometric position readout of test masses with pm/sqrtHz precision over long time scales. Heterodyne interferometer schemes that achieve such precisions are available, but they require complex optical set-ups, which limits their scalability for multiple channels.
We discuss alternative interferometer techniques that were investigated in recent years, which use phase modulation schemes and complex digital readout algorithms to decrease the complexity of optical set-ups.
As highlight we present the first experimental results on deep frequency modulation, a new technique that combines sinusoidial laser frequency modulation in unequal arm-length interferometers with a non-linear fit of the amplitudes of the modulation frequency harmonics, an algorithm first developed for deep phase modulation.
This scheme requires very few optical components in the phase critical beam path and promises simple scalability for future multi-degree of freedom readouts of test masses.},
note = {11th Edoardo Amaldi Conference, Gwangju, South Corea},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
Experiments for space and ground-based gravitational wave detectors often require large dynamic range interferometric position readout of test masses with pm/sqrtHz precision over long time scales. Heterodyne interferometer schemes that achieve such precisions are available, but they require complex optical set-ups, which limits their scalability for multiple channels.
We discuss alternative interferometer techniques that were investigated in recent years, which use phase modulation schemes and complex digital readout algorithms to decrease the complexity of optical set-ups.
As highlight we present the first experimental results on deep frequency modulation, a new technique that combines sinusoidial laser frequency modulation in unequal arm-length interferometers with a non-linear fit of the amplitudes of the modulation frequency harmonics, an algorithm first developed for deep phase modulation.
This scheme requires very few optical components in the phase critical beam path and promises simple scalability for future multi-degree of freedom readouts of test masses. |
2013
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Isleif, Katharina-Sophie Digitally enhanced heterodyne interferometry Vortrag 15.03.2013, (Deutsch-Physikalische-Gesellschaft Frühjahrestagung, Hannover, Germany). BibTeX @misc{Isleif2013,
title = {Digitally enhanced heterodyne interferometry},
author = {Katharina-Sophie Isleif },
year = {2013},
date = {2013-03-15},
note = {Deutsch-Physikalische-Gesellschaft Frühjahrestagung, Hannover, Germany},
keywords = {},
pubstate = {published},
tppubtype = {presentation}
}
|