Instrumentation, Techniques, and Measurement

Fluid-enhanced tunable diffraction with an elastomeric grating

[+] Author Affiliations
Caironesa T. Pada, Raphael A. Guerrero

Ateneo de Manila University Loyola Heights, Department of Physics, School of Science and Engineering, Quezon City, Philippines

Opt. Eng. 56(5), 054101 (May 02, 2017). doi:10.1117/1.OE.56.5.054101
History: Received January 13, 2017; Accepted April 17, 2017
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Abstract.  We replicate a diffraction grating by soft lithography. Tunable diffraction is accomplished by modifying groove spacing through the application of strain on the elastomeric replica. The range of strain-variable diffraction angles is extended by adding a refracting liquid layer to the grating. Using a water layer, the diffraction angle is tuned from 38 to 33.4 deg with an applied strain of 17.7%. With an equal amount of strain, employing a glycerol layer results in the diffraction angle varying from 38.8 to 34.4 deg. Our experimental results are accurately described by the combined effects of diffraction by a deformable grating and refraction by a fluid with a curved surface.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Topics

Diffraction ; Water

Citation

Caironesa T. Pada and Raphael A. Guerrero
"Fluid-enhanced tunable diffraction with an elastomeric grating", Opt. Eng. 56(5), 054101 (May 02, 2017). ; http://dx.doi.org/10.1117/1.OE.56.5.054101


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