• Medientyp: E-Artikel; Sonstige Veröffentlichung
  • Titel: 2×10-13 Fractional Laser-Frequency Stability with a 7-cm Unequal-Arm Mach-Zehnder Interferometer
  • Beteiligte: Huarcaya, Victor [Verfasser:in]; Álvarez, Miguel Dovale [Verfasser:in]; Penkert, Daniel [Verfasser:in]; Gozzo, Stefano [Verfasser:in]; Cano, Pablo Martínez [Verfasser:in]; Yamamoto, Kohei [Verfasser:in]; Delgado, Juan José Esteban [Verfasser:in]; Mehmet, Moritz [Verfasser:in]; Danzmann, Karsten [Verfasser:in]; Heinzel, Gerhard [Verfasser:in]
  • Erschienen: College Park, Md. [u.a.] : American Physical Society, 2023
  • Erschienen in: Physical Review Applied 20 (2023), Nr. 2 ; Physical Review Applied
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/16066; https://doi.org/10.1103/physrevapplied.20.024078
  • Schlagwörter: Frequency noise ; Frequency stability ; A-stable ; % reductions ; Frequency reference
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  • Beschreibung: 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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