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Dual-quadrature phasemeter for space-based interferometry

Sambridge, Callum S. and McKenzie, Kirk, 2025. Dual-quadrature phasemeter for space-based interferometry. Physical Review Applied, 24(1):014009, doi:10.1103/35vl-5wh1.

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@ARTICLE{2025PhRvP..24a4009S,
       author = {{Sambridge}, Callum S. and {McKenzie}, Kirk},
        title = "{Dual-quadrature phasemeter for space-based interferometry}",
      journal = {Physical Review Applied},
     keywords = {Physics - Optics},
         year = 2025,
        month = jul,
       volume = {24},
       number = {1},
          eid = {014009},
        pages = {014009},
     abstract = "{This letter presents a dual-quadrature phasemeter, an implementation of
        a phase-locked loop designed to track the phase of homodyne and
        heterodyne intersatellite laser links. Dual-quadrature
        phasemeters use dual-quadrature optical detection to enable an
        alternate phase readout scheme that operates with wider
        bandwidths and on signals with carrier-frequency differences
        down to dc. Analytical modeling demonstrates that dual-
        quadrature phasemeters overcome the bandwidth limitations of
        conventional phasemeters. Numerical simulations of noise
        linearity tests found that the phase-tracking error of the dual-
        quadrature phasemeter is less than 10 microcycle/Hz in the
        presence of nonlinear cyclic errors. The dual-quadrature
        phasemeter enables exploration of an optical configuration for
        retroreflector-based space geodesy missions with architecture
        similar to that implemented in the Gravity Recovery and Climate
        Experiment Follow-On mission. One such alternate configuration
        is proposed that is capable of tracking satellite separation
        without requiring a frequency offset between local and incoming
        light, eliminating the need for optical frequency shifters.}",
          doi = {10.1103/35vl-5wh1},
archivePrefix = {arXiv},
       eprint = {2410.21565},
 primaryClass = {physics.optics},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2025PhRvP..24a4009S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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