Dual-wavelength operation diffractive phase elements for pattern formation.
Opt Express
; 1(2): 54-9, 1997 Jul 21.
Article
em En
| MEDLINE
| ID: mdl-19373380
ABSTRACT
We report on the design and fabrication of novel diffractive phase elements that reconstruct distinct intensity patterns in the far-field on illumination with two specific wavelengths. The elements contain deep surface-relief structures that represent phase-delays of greater than 2p radians. The design process incorporates a modified version of the iterative Fourier transform algorithm. A 16 phase-level element for dual wavelength (blue and red) operation, with high diffraction efficiency, is demonstrated experimentally.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
1997
Tipo de documento:
Article