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Journal Article

2×10−13 Fractional Laser-Frequency Stability with a 7-cm Unequal-Arm Mach-Zehnder Interferometer

MPS-Authors
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Huarcaya,  Victor
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Alvarez,  Miguel Dovale
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Penkert,  Daniel
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Gozzo ,  Stefano
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

Cano ,  Pablo Martínez
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Yamamoto,  Kohei
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Delgado,  Juan Jose Esteban
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Mehmet,  Moritz
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Danzmann,  Karsten
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Heinzel,  Gerhard
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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2308.11325.pdf
(Preprint), 2MB

PhysRevApplied.20.024078.pdf
(Publisher version), 3MB

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Citation

Huarcaya, V., Alvarez, M. D., Penkert, D., Gozzo, S., Cano, P. M., Yamamoto, K., et al. (2023). 2×10−13 Fractional Laser-Frequency Stability with a 7-cm Unequal-Arm Mach-Zehnder Interferometer. Physical Review Applied, 20: 024078. doi:10.1103/PhysRevApplied.20.024078.


Cite as: https://hdl.handle.net/21.11116/0000-000D-D6DA-C
Abstract
To achieve sub-picometer sensitivities in the millihertz band, laser
interferometric inertial sensors rely on some form of reduction of the laser
frequency noise, typically by locking the laser to a stable frequency
reference, such as the narrow-linewidth resonance of an ultra-stable optical
cavity or an atomic or molecular transition. In this paper we report on a
compact laser frequency stabilization technique based on an unequal-arm
Mach-Zehnder interferometer that is sub-nanometer stable at $10\,\mu$Hz,
sub-picometer at $0.5\,$mHz, and reaches a noise floor of
$7\,\mathrm{fm}/\!\sqrt{\mathrm{Hz}}$ at 1 Hz. The interferometer is used in
conjunction with a DC servo to stabilize the frequency of a laser down to a
fractional instability below $4 \times 10^{-13}$ at averaging times from 0.1 to
100 seconds. The technique offers a wide operating range, does not rely on
complex lock acquisition procedures, and can be readily integrated as part of
the optical bench in future gravity missions.