Photonic crystal based spatial filters: working principle and applications in micro-optical devices

Vytautas Purlys; Darius Gailevičius; Lina Maigyte; Martynas Peckus; Roaldas Gadonas; Kestutis Staliunas

doi:10.1117/12.2225941

18 April 2016 Photonic crystal based spatial filters: working principle and applications in micro-optical devices

Vytautas Purlys, Darius Gailevičius, Lina Maigyte, Martynas Peckus, Roaldas Gadonas, Kestutis Staliunas

Proceedings Volume 9885, Photonic Crystal Materials and Devices XII; 988518 (2016) https://doi.org/10.1117/12.2225941
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

Here we review and discuss the recent advances of the spatial filtering using the Photonic Crystals (PhCs) in different propagation regimes and for different geometries. We numerically and experimentally explore the spatial filtering in crystals with different symmetries, including axisymmetric crystals; we discuss the role of chirping, i.e., the dependence of the longitudinal period along the structure. Additionally, we present a super-collimation effect, which we observed only in axisymmetric PhCs, which leads to a significant enhancement of axial beam components by depleting the higher angular frequency components. Finally, we discuss several implementations of such filters for intracavity spatial filtering.

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Vytautas Purlys, Darius Gailevičius, Lina Maigyte, Martynas Peckus, Roaldas Gadonas, and Kestutis Staliunas "Photonic crystal based spatial filters: working principle and applications in micro-optical devices", Proc. SPIE 9885, Photonic Crystal Materials and Devices XII, 988518 (18 April 2016); https://doi.org/10.1117/12.2225941

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KEYWORDS

Photonic crystals

Modulation

Crystals

Spatial filters

Refractive index

Colorimetry

Scattering

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