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Optics Letters

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  • Vol. 29, Iss. 16 — Aug. 13, 2004
  • pp: 1846–1848

Multilevel phase-type diffractive lenses in silica glass induced by filamentation of femtosecond laser pulses

Kazuhiro Yamada, Wataru Watanabe, Yudong Li, Kazuyoshi Itoh, and Junji Nishii  »View Author Affiliations


Optics Letters, Vol. 29, Issue 16, pp. 1846-1848 (2004)
http://dx.doi.org/10.1364/OL.29.001846


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Abstract

Multilevel phase-type diffractive lenses were fabricated by translating a filament of a femtosecond laser pulse into three-dimensional space inside synthesized silica. The profile of the lenses was designed by use of a multilevel approximation to a kinoform lens. Two-level diffractive lenses with multiple layers along the optical axis provided a maximum efficiency of 37.6% at a wavelength of 632.8 nm. A four-level diffractive lens provided a maximum efficiency of 56.9%. The lenses fabricated with filamentation were free from birefringence.

© 2004 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(130.3120) Integrated optics : Integrated optics devices
(160.2750) Materials : Glass and other amorphous materials
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(260.5950) Physical optics : Self-focusing
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
Kazuhiro Yamada, Wataru Watanabe, Yudong Li, Kazuyoshi Itoh, and Junji Nishii, "Multilevel phase-type diffractive lenses in silica glass induced by filamentation of femtosecond laser pulses," Opt. Lett. 29, 1846-1848 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-16-1846


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