Liquid refractometer based on immersion diffractometry

doi:10.1364/OE.15.009470

Liquid refractometer based on immersion diffractometry

Sheng-Hua Lu, Shang-Peng Pan, Tzong-Shi Liu, and Ching-Fen Kao »View Author Affiliations

Optics Express, Vol. 15, Issue 15, pp. 9470-9475 (2007)
http://dx.doi.org/10.1364/OE.15.009470

View Full Text Article

Enhanced HTML Acrobat PDF (126 KB)

Journal Search
Article Lookup

Article Tools

Citations

Alert me when this article is cited
Export Citation/Save

Abstract
Article Info
References (11)
Cited By
Figures (4)
Metrics
Related Content

Abstract

This study presents a laser diffractometric refractometer for measuring the refractive index of liquids. The refractive index is determined by rotating a reflection grating that is immersed in the fluid under test, and measuring the first-order Littrow diffraction angle. The Littrow angle is easily detected form the interferogram formed by the diffracted beam from the grating and the reflected beam from the liquid surface. No special cell for liquids is required. The alignment and measuring processes are simpler than those of other refractometers. The results of a feasibility experiment reveal that the accuracy of the proposed approach is about 0.003 for a refractive index of around 1.3.

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(120.4640) Instrumentation, measurement, and metrology : Optical instruments

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: May 29, 2007
Revised Manuscript: July 12, 2007
Manuscript Accepted: July 14, 2007
Published: July 17, 2007

Citation
Sheng-Hua Lu, Shang-Peng Pan, Tzong-Shi Liu, and Ching-Fen Kao, "Liquid refractometer based on immersion diffractometry," Opt. Express 15, 9470-9475 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-15-9470

Sort: Author | Year | Journal | Reset

References

J. H. Burnett and S.G. Kaplan, "Measurement of the refractive index and thermo-optic coefficient of water near 193 nm," J. Microlithogr. Microfabr. Microsyst. 3, 68-72 (2004). [CrossRef]
S. G. Kaplan and J. H. Burnett, "Optical properties of fluids for 248 and 193 nm immersion photo-lithography," Appl. Opt. 45, 1721-1724 (2006). [CrossRef] [PubMed]
E. Moreels, C. de Greef, and R. Finsy, "Laser light refractometer," Appl. Opt. 23, 3010-3013 (1984). [CrossRef] [PubMed]
S. Nemoto, "Measurement of the refractive index of liquid using laser beam displacement," Appl. Opt. 31, 690-694 (1992). [CrossRef]
T. Li and X. Tan, "Stepwise interferometric method of measuring the refractive index of liquid samples," Appl. Opt. 32, 2274-2277 (1993). [CrossRef] [PubMed]
M. Musso, R. Aschauer, A. Asenbaum, C. Vasi, and E. Wilhelm, "Interferometric determination of the refractive index of liquid sulphur dioxide," Meas. Sci. and Technol. 11, 1714-1720 (2000). [CrossRef]
M. de Angelis, S. De Nicola, P. Ferraro, A. Finizio, and G. Pierattini, "Liquid refractometer based on interferometric fringe projection," Opt. Commun. 175, 315-321 (2000). [CrossRef]
A. F. Leung and J. J. Vandiver, "Automatic refractometer," Opt. Eng. 42, 1128-1131 (2003). [CrossRef]
S. H. Lu, L. C. Tseng, C. F. Kao, S. P. Pan, and L. C. Chang, "Immersion diffractometry for determining nanoscale grating pitch," Opt. Express 14, 9564-9569 (2006). [CrossRef] [PubMed]
A. A. Zaidi, "Simple laser refractometer for liquids," Rev. Sci. Instrum. 59, 1153-1155 (1988). [CrossRef]
S. Singh, "Diffraction method measures refractive indices of liquids," Phys. Educ. 39, 235 (2004). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Click here to see a list of articles that cite this paper