Title

Preparation Of Metallo-Dielectric Photonic Crystals By Multi-Photon Direct Laser Writing

Keywords

Direct laser writing; Infrared micro-optical systems; Metallo-dielectrics; Photonic crystals; Two-photon microfabrication

Abstract

Metallo-dielectric photonic crystals (MDPCs) can exhibit intriguing and potentially useful optical properties, including ultra-wide photonic bandgaps, engineered thermal emission, and negative refractive index. But access to such materials has been limited by the lack of suitable methods for their preparation. We have developed a route to three-dimensional (3D) MDPCs that involves fabricating a polymeric pre-form by multi-photon direct laser writing and then conformally depositing metal onto the pre-form by electroless metallization. We use the approach to prepare silver- and copper-plated "woodpile" PCs having face-centered tetragonal symmetry and unit-cell period of several micrometers. The resulting 3D metallized structures exhibit mid-infrared reflectance that is consistent with theory and experimental observations obtained for MDPCs prepared by other routes. These data indicate that multi-photon direct laser writing coupled with electroless metallization is a viable route to complex 3D MDPCs of many symmetries and basis sets and provides a path for integrating such structures with other micron-scale optical elements.

Publication Date

5-15-2008

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

6901

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.760826

Socpus ID

43249091830 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/43249091830

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