Comparison of electrostatic and photon pressure force references at the nanonewton level

Gordon A Shaw, Julian Stirling, John Kramar, Paul Williams, Matthew Spidell, Richard Mirin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This work describes a metrological comparison between nanonewton force references derived from an electrostatic force balance (EFB) and photon pressure from laser optical power in the 1 Watt range. An EFB is used to measure photon pressure force in the 10 nanonewton range from the reflection of a laser from a low (approximately 10−5) loss III–V semiconductor distributed Bragg reflector (DBR) mirror while the power of the reflected beam was simultaneously monitored with a traceable thermopile detector. This work demonstrates a method to link mass, force and laser power within the international system of units (SI) with explicit treatment of absorption, diffuse reflection, and a detailed uncertainty analysis. Additionally, it demonstrates a viable method to scale this force continuously using a pulsed laser technique while maintaining the constant thermal load necessary for precision measurement of nanonewton forces with a mechanical balance.
Original languageEnglish
Pages (from-to)025002
JournalMetrologia
Volume56
Issue number2
Early online date8 Feb 2019
DOIs
Publication statusE-pub ahead of print - 8 Feb 2019

Cite this

Comparison of electrostatic and photon pressure force references at the nanonewton level. / Shaw, Gordon A; Stirling, Julian; Kramar, John; Williams, Paul; Spidell, Matthew; Mirin, Richard.

In: Metrologia, Vol. 56, No. 2, 08.02.2019, p. 025002.

Research output: Contribution to journalArticle

Shaw, Gordon A ; Stirling, Julian ; Kramar, John ; Williams, Paul ; Spidell, Matthew ; Mirin, Richard. / Comparison of electrostatic and photon pressure force references at the nanonewton level. In: Metrologia. 2019 ; Vol. 56, No. 2. pp. 025002.
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