Characterization of the long-term dimensional stability of a NEXCERA block using the optical resonator technique

Kwong, Chang Jian; Hansen, M.; Sugawara, Jun; Schiller, S.

doi:10.1088/1361-6501/aac3b0

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…In the longer term, a FP cavity made of a more stable material than Zerodur ® can be used. Several publications report a ceramic, NEXCERA TM (Krosaki Harima), which has an aging almost 5 times lower than Zerodur ® [13].…”

Section: Improved Design Of the Refractometermentioning

confidence: 99%

Towards an improved helium-based refractometer for pressure measurements

et al. 2020

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This paper describes a quantum realization of the pascal based a helium absolute refractometer at 532 nm. The short-term stability in pressure is ± 2 mPa with a resolution in pressure of this new optical pressure standard is better than 1 mPa with temperature stability about 1 mK. A new design of the refractometer is presented to have better temperature stability and accurate temperature measurements to reach uncertainties in pressure better than current conventional methods.

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Section: Improved Design Of the Refractometermentioning

confidence: 99%

Towards an improved helium-based refractometer for pressure measurements

et al. 2020

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Capability of commercial trackers as compensators for the absolute refractive index of air

Egan

2022

Precision Engineering

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Optical frequency reference based on a cryogenic silicon resonator

Wiens,

Kwong,

Müller

et al. 2023

Opt. Express

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We present the development and in-depth characterization of an optical reference based on a 1.5 μm laser stabilized to a cryogenic silicon optical resonator operated at 1.7 K. The closed-cycle cryostat is equipped with a cryogenic passive vibration isolation. At τ = 1 s integration time the frequency instability is 2 × 10−14, predominantly due to residual vibrations. At τ = 100 s the frequency instability is 6.2 × 10−15. The lowest instability of 3.5 × 10−16 occurs at τ = 6000 s, and is limited by the stability of the hydrogen maser used in the comparison. The mean fractional frequency drift rate over 190 days was −3.7 × 10−20/s. In conjunction with a frequency comb and a GNSS receiver this optical reference would be suitable to provide optical frequencies with accuracies at the low 10−14 level. We show that residual vibrations affect the resonator and the optical fiber delivering the laser light to it, and that laboratory temperature variations contribute to frequency instability at short and medium integration times. Mitigation of these issues might in the future allow for demonstration of the thermal-noise-limited performance of the resonator.

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Characterization of the long-term dimensional stability of a NEXCERA block using the optical resonator technique

Cited by 4 publications

References 13 publications

Towards an improved helium-based refractometer for pressure measurements

Towards an improved helium-based refractometer for pressure measurements

Capability of commercial trackers as compensators for the absolute refractive index of air

Optical frequency reference based on a cryogenic silicon resonator

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