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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 26, Iss. 1 — Jan. 1, 2001
  • pp: 4–6

Diffraction efficiency increase by corona discharge in photoinduced surface-relief gratings on an azo polymer film

Katsuhiro Munakata, Kenji Harada, Hitoshi Anji, Masahide Itoh, Toyohiko Yatagai, and Shinsuke Umegaki  »View Author Affiliations


Optics Letters, Vol. 26, Issue 1, pp. 4-6 (2001)
http://dx.doi.org/10.1364/OL.26.000004


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Abstract

The diffraction efficiency of a surface-relief grating (SRG) was dramatically increased by corona discharge. We fabricated this SRG by applying surface modulation to azo polymer films, using laser interference fringes. The electric charge was deposited upon the SRG by a corona discharge in an oven. The first-order diffraction efficiency measured before and after corona discharge above the glass-transition temperature increased from ∼2% to ∼40% in a SRG written with a circularly polarized beam. The relief depth of the SRG as measured with an atomic-force microscope also increased, from ∼130 nm to ∼450 nm. The increase in diffraction efficiency was independent of the writing polarization.

© 2001 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.7330) Diffraction and gratings : Volume gratings
(090.2900) Holography : Optical storage materials
(210.4770) Optical data storage : Optical recording
(230.1950) Optical devices : Diffraction gratings
(250.2080) Optoelectronics : Polymer active devices

Citation
Katsuhiro Munakata, Kenji Harada, Hitoshi Anji, Masahide Itoh, Toyohiko Yatagai, and Shinsuke Umegaki, "Diffraction efficiency increase by corona discharge in photoinduced surface-relief gratings on an azo polymer film," Opt. Lett. 26, 4-6 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-1-4

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