A portable picometer reference actuator with 100 μm range, picometer resolution, subnanometer accuracy and submicroradian tip-tilt error for the characterization of measuring instruments at the nanoscale
Articolo
Data di Pubblicazione:
2018
Citazione:
A portable picometer reference actuator with 100 μm range, picometer resolution, subnanometer accuracy and submicroradian tip-tilt error for the characterization of measuring instruments at the nanoscale / M. Pisani, A. Giugni. - In: METROLOGIA. - ISSN 0026-1394. - 55:4(2018 Aug), pp. 541-557. [10.1088/1681-7575/aaca6f]
Abstract:
We present the realization and the characterization of a picometer reference actuator (PRA), a metrological instrument based on a precision linear actuator capable of 100 μm range with subnanometer accuracy, picometer resolution, and submicroradian tip-tilt pointing control. The PRA relies on an integrated multiple reflections homodyne interferometer as a high resolution and accurate internal reference, on a multiple reflection based angle sensor for the control of the movement straightness, and on a versatile mirrors configuration to transfer the metrological traceability to an external device. As an example case we report the use of the PRA for the characterization of the non-linearities of the INRIM heterodyne interferometer dedicated to the calibration of capacitive sensors.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
high-resolution interferometry; homodyne interferometer; metrological actuator; metrological angle sensor devices; optical non-linearity; optical path multiplier
Elenco autori:
M. Pisani, A. Giugni
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