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Quantum Simulation

Mitigation of optics non-uniformity using optimally combined segmented photodetector

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Authors: Daiki Haba, Kento Takeshita, Ruizhe Wan, Hayato Tanaka, Seiya Sasaoka, Wang Haoyu, Kentaro Somiya

Year

2025

Paper ID

4803

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

105

Citations

0

Abstract

Abstract We report a simple yet powerful technique to reduce the effect of inhomogeneity in an input optics substrate in a high-precision measurement device such as a gravitational-wave detector. An asymmetric pattern in the transmission profile of an optic produces an offset in the alignment sensing signal, and the offset fluctuates with the moving position of the beam. By optimizing the weighting coefficients of a segmented photodetector, we can trade off the reduction in offset for a slight increase in shot noise. We demonstrated that our proposed method can reduce the beam jitter noise in a Fabry–Perot cavity through numerical simulations with measured data.

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  • Abstract We report a simple yet powerful technique to reduce the effect of inhomogeneity in an input optics substrate in a high-precision measurement device such as a...

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References & Citation Signals

[1] DOI https://doi.org/10.1088/1361-6382/ae2db4 [2] Publisher https://doi.org/10.1088/1361-6382/ae2db4

Local Citation Graph (Related-Paper Links)

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External citation index: OpenAlex citation signal • updated 2026-10-30 12:02:08

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