2017
DOI: 10.1109/tim.2016.2634758
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A Six-Axis Heterodyne Interferometer System for the Joule Balance

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Cited by 20 publications
(9 citation statements)
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“…The sources of uncertainty in length measurement system are shown in table 7. The wavelength uncertainty is larger than that in paper [11], because we used other three thermal frequency stabilization laser heads instead of one frequency offset-locked laser head to achieve stronger light intensity. The relative uncertainties of the laser wavelength are not larger than 7 × 10 -9 , which is measured with help of the iodine-stabilized HeNe laser at 633 nm.…”
Section: Length Measurementmentioning
confidence: 97%
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“…The sources of uncertainty in length measurement system are shown in table 7. The wavelength uncertainty is larger than that in paper [11], because we used other three thermal frequency stabilization laser heads instead of one frequency offset-locked laser head to achieve stronger light intensity. The relative uncertainties of the laser wavelength are not larger than 7 × 10 -9 , which is measured with help of the iodine-stabilized HeNe laser at 633 nm.…”
Section: Length Measurementmentioning
confidence: 97%
“…At the same time, obvious drifting of the suspended coil and the electromagnet, which is mainly from the mechanical stress relaxation and self-heating of the coils, is also observed. In order to prevent instability of the suspended coil and the electromagnet, we used a damping device to block the swing of the suspended coil [11]. The auxiliary coils and magnet of the damping device are located outside the main magnet.…”
Section: The Length Measurement System and Position Locking Systemmentioning
confidence: 99%
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“…Nowadays, more and more researchers around the world are reporting progress in picoscale resolution heterodyne interferometers, including the ones utilized in gravitational wave detection 3 and Joule balance. 4 Meanwhile, as the investigation on the optical nonlinearity existing in heterodyne interferometers goes further, several explanatory theories have been advanced and errors in nanometer and picometers have been revealed. [5][6][7] However, it is difficult and expensive to implement a picoscale experiment.…”
Section: Introductionmentioning
confidence: 99%