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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 9 — May. 3, 2004
  • pp: 1924–1931

Optical properties of injection molded subwavelength gratings

Jacob C. Jonsson and Fredrik Nikolajeff  »View Author Affiliations


Optics Express, Vol. 12, Issue 9, pp. 1924-1931 (2004)
http://dx.doi.org/10.1364/OPEX.12.001924


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Abstract

We have fabricated injection molded subwavelength gratings for anti-reflection purposes superimposed upon a blazed grating structure in polycarbonate. The gratings are initially formed by electron-beam lithography and subsequently replicated using injection molding. There are several problems when trying to optically characterize a component such as a blazed transmittance grating. Standard spectrophotometers are not well suited for measuring transmittance in the different diffraction orders individually. Our sample size of 0.8×0.8 mm2 is also a problem for standard instruments. First order transmittance has been measured for blazed gratings with single and double-sided AR-treatment and is transmittance is compared with with higher diffraction orders. Double-sided AR-treatment not only increase the total transmittance but also widens the wavelength range with high effectiveness of the first order diffraction.

© 2004 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.1950) Optical devices : Diffraction gratings

ToC Category:
Research Papers

History
Original Manuscript: March 26, 2004
Revised Manuscript: April 20, 2004
Published: May 3, 2004

Citation
Jacob Jonsson and Fredrik Nikolajeff, "Optical properties of injection molded subwavelength gratings," Opt. Express 12, 1924-1931 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-9-1924


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References

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