Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Absolute refractometry of dry gas to ± 3 parts in 10 9

Not Accessible

Your library or personal account may give you access

Abstract

We present a method of measuring the refractive index of dry gases absolutely at 632.8nm wavelength using a Fabry–Perot cavity with an expanded uncertainty of <3×109 (coverage factor k=2). The main contribution to this uncertainty is how well vacuum-to-atmosphere compression effects (physical length variation) in the cavities can be corrected. This paper describes the technique and reports reference values for the refractive indices of nitrogen and argon gases at 100kPa and 20°C with an expanded uncertainty of <9×109 (coverage factor k=2), with the additional and larger part of this uncertainty coming from the pressure and temperature measurement.

© 2011 Optical Society of America

Full Article  |  PDF Article
More Like This
Design and performance of an absolute gas refractometer based on a synthetic pseudo-wavelength method

Jitao Zhang, Pei Huang, Yan Li, and Haoyun Wei
Appl. Opt. 52(16) 3671-3679 (2013)

Ability of gas modulation to reduce the pickup of drifts in refractometry

Ove Axner, Clayton Forssén, Isak Silander, Johan Zakrisson, and Martin Zelan
J. Opt. Soc. Am. B 38(8) 2419-2436 (2021)

In situ determination of the penetration depth of mirrors in Fabry-Perot refractometers and its influence on assessment of refractivity and pressure

Isak Silander, Johan Zakrisson, Vinicius Silva de Oliveira, Clayton Forssén, Aleksandra Foltynowicz, Tom Rubin, Martin Zelan, and Ove Axner
Opt. Express 30(14) 25891-25906 (2022)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved