Details
| Original language | English |
|---|---|
| Article number | 024078 |
| Journal | Physical review applied |
| Volume | 20 |
| Issue number | 2 |
| Publication status | Published - Aug 2023 |
Abstract
To achieve subpicometer 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-line-width resonance of an ultrastable 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 subnanometer stable at 10μHz, subpicometer at 0.5 mHz, and reaches a noise floor of 7fm/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 4×10-13 at averaging times from 0.1 to 100 s. 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.
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In: Physical review applied, Vol. 20, No. 2, 024078, 08.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - 2×10-13 Fractional Laser-Frequency Stability with a 7-cm Unequal-Arm Mach-Zehnder Interferometer
AU - Huarcaya, Victor
AU - Álvarez, Miguel Dovale
AU - Penkert, Daniel
AU - Gozzo, Stefano
AU - Cano, Pablo Martínez
AU - Yamamoto, Kohei
AU - Delgado, Juan José Esteban
AU - Mehmet, Moritz
AU - Danzmann, Karsten
AU - Heinzel, Gerhard
N1 - Funding Information: We would like to thank Germán Fernández Barranco for his help with analog electronics and Oliver Gerberding and Katharina-Sophie Isleif for their continued cooperation in the project. M.D.A. would like to thank Olaf Hartwig for fruitful discussions on time-domain stability analysis. This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) Project-ID 434617780-SFB 1464. We acknowledge support from the DFG Sonderforschungsbereich 1128 Relativistic Geodesy and Cluster of Excellence “QuantumFrontiers: Light and Matter at the Quantum Frontier: Foundations and Applications in Metrology” (EXC-2123, Project No. 390837967) and the Max Planck Society (MPS) through the LEGACY cooperation on low-frequency gravitational-wave astronomy (M.IF.A.QOP18098). We also acknowledge support by the German Aerospace Center (DLR) with funds from the Federal Ministry of Economics and Technology (BMWi), according to a decision of the German Federal Parliament (Grant No. 50OQ2301, based on Grants No. 50OQ0601, No. 50OQ1301, and No. 50OQ1801).
PY - 2023/8
Y1 - 2023/8
N2 - To achieve subpicometer 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-line-width resonance of an ultrastable 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 subnanometer stable at 10μHz, subpicometer at 0.5 mHz, and reaches a noise floor of 7fm/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 4×10-13 at averaging times from 0.1 to 100 s. 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.
AB - To achieve subpicometer 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-line-width resonance of an ultrastable 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 subnanometer stable at 10μHz, subpicometer at 0.5 mHz, and reaches a noise floor of 7fm/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 4×10-13 at averaging times from 0.1 to 100 s. 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.
UR - http://www.scopus.com/inward/record.url?scp=85172876108&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.20.024078
DO - 10.1103/PhysRevApplied.20.024078
M3 - Article
AN - SCOPUS:85172876108
VL - 20
JO - Physical review applied
JF - Physical review applied
SN - 2331-7019
IS - 2
M1 - 024078
ER -