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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 20 — Jul. 10, 2006
  • pp: 4843–4849

Replicated, high-aspect-ratio micro-optical components fabricated from inorganic solgel materials

Holger Krause, Wolfgang Mönch, and Hans Zappe  »View Author Affiliations

Applied Optics, Vol. 45, Issue 20, pp. 4843-4849 (2006)

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A replication process for the fabrication of refractive microlenses from a purely inorganic solgel material based on tetraethoxysilane is presented. The geometrical dimensions and optical properties of the inorganic microlenses are characterized and compared with those of microlenses replicated in a hybrid xerogel containing organic additives. By a reduced solvent content in the sol composition, together with modifications in the replication process, it was possible to obtain inorganic xerogel lenses with exceptionally high sagittal height values of as much as 28   μm . Compared with the hybrid xerogel, the inorganic xerogel has the advantage of an absorption coefficient that is five times lower in the visible spectral range and exhibits optical transparency in the near-ultraviolet range for wavelengths down to 200   nm .

© 2006 Optical Society of America

OCIS Codes
(160.6060) Materials : Solgel
(220.3630) Optical design and fabrication : Lenses
(220.4000) Optical design and fabrication : Microstructure fabrication
(350.3950) Other areas of optics : Micro-optics

Original Manuscript: November 14, 2005
Revised Manuscript: January 23, 2006
Manuscript Accepted: January 30, 2006

Holger Krause, Wolfgang Mönch, and Hans Zappe, "Replicated, high-aspect-ratio micro-optical components fabricated from inorganic solgel materials," Appl. Opt. 45, 4843-4849 (2006)

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