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Design, construction, and performance of a real-time holographic refractometry prototype for liquid analysis
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10.1063/1.3523049
/content/aip/journal/rsi/82/1/10.1063/1.3523049
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/1/10.1063/1.3523049

Figures

Image of FIG. 1.
FIG. 1.

90°-prism retroreflector PR in test cell.

Image of FIG. 2.
FIG. 2.

Optical setup for the holographic refractometer: BTO, Bi12TiO20 crystal; BS, beam splitter; M1 and M2, mirrors; P1 and P2, polarizers; L1 to L3, lenses; translation stage TS driver, CCD camera and PC computer for image acquisition.

Image of FIG. 3.
FIG. 3.

(a) and (b) Pictures of the refractometer prototype; (c) PR mount and test cell.

Image of FIG. 4.
FIG. 4.

Contour holographic interferogram of the tilted metallic plate for four laser modes and λ S = 6.6284 mm.

Image of FIG. 5.
FIG. 5.

Refractive index of the mixture ethanol + water as a function of the ethanol mass fraction, measured with the holographic refractometer (circles) and by a commercial Abbe refractometer (triangles).

Image of FIG. 6.
FIG. 6.

Refractive index of the aqueous NaCl solution vs the NaCl concentration, measured with the holographic refractometer (circles) and with the Abbe refractometer (triangles). The solid curve refers as to the data obtained from Eq. (4).

Image of FIG. 7.
FIG. 7.

Optical arrangement for two-laser holographic refractometry.

Image of FIG. 8.
FIG. 8.

Two-laser holographic interferogram of the flat object for λ S = 788.8 ± 0.5 μm.

Image of FIG. 9.
FIG. 9.

(a) and (b) Optical schemes on the reference-beam arm for effective ΔL enlargement. M3 and M4, mirrors, PR1, PR2, and PR3, 90°-prisms.

Tables

Generic image for table
Table I.

Measurement of NaCl concentrations in an aqueous solution by refractometry. C SNaCl are the known concentrations (first column) and C SH (third column) and C SA (sixth column) are the NaCl concentrations obtained through the holographic and the Abbe refractometers, respectively.

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/content/aip/journal/rsi/82/1/10.1063/1.3523049
2011-01-21
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Design, construction, and performance of a real-time holographic refractometry prototype for liquid analysis
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/1/10.1063/1.3523049
10.1063/1.3523049
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