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Optics Letters

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  • Vol. 36, Iss. 8 — Apr. 15, 2011
  • pp: 1431–1433

Design of ultrabroadband internal reflection gratings with high efficiency

Qunyu Bi, Jiangjun Zheng, Meizhi Sun, Xinbo Yang, Xinglong Xie, and Zunqi Lin  »View Author Affiliations


Optics Letters, Vol. 36, Issue 8, pp. 1431-1433 (2011)
http://dx.doi.org/10.1364/OL.36.001431


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Abstract

A high-efficiency, ultrabroadband dielectric internal reflection grating with rhombus-shaped grooves is designed by a rigorous coupled-wave analysis, and an effective method for predicting spectral bandwidths of gratings from their efficiency maps is presented. The grating can be fabricated from a single dielectric material, and its reflection diffraction efficiency of the 1 st order can reach more than 0.99. More importantly, an ultrabroadband top-hat diffraction spectrum with efficiency exceeding 0.98 over 170 nm wavelength wide is achieved, which makes the gratings suitable for applications associated with broadband illumination, such as ultrashort pulses.

© 2011 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings

ToC Category:
Diffraction and Gratings

History
Original Manuscript: November 29, 2010
Revised Manuscript: February 24, 2011
Manuscript Accepted: February 25, 2011
Published: April 13, 2011

Citation
Qunyu Bi, Jiangjun Zheng, Meizhi Sun, Xinbo Yang, Xinglong Xie, and Zunqi Lin, "Design of ultrabroadband internal reflection gratings with high efficiency," Opt. Lett. 36, 1431-1433 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-8-1431


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