Journal ArticleDOI
Spatial filtering by axisymmetric photonic microstructures.
Vytautas Purlys,L. Maigyte,Darius Gailevičius,Martynas Peckus,Mangirdas Malinauskas,Roaldas Gadonas,Kestutis Staliunas +6 more
TLDR
Axisymmetric angular filtering of two-dimensional light beams by axisyMMetric photonic microstructures in bulk of glass is proposed and experimentally demonstrated.Abstract:
We propose and show experimentally axisymmetric spatial (angular) filtering of two-dimensional light beams by axisymmetric photonic microstructures. Such three-dimensional microstructures (similar to photonic crystals), in gapless configuration, were recorded in bulk of glass, where the refractive index has been point-by-point modulated using tightly focused femtosecond laser pulses. Axisymmetric angular filtering of approximately 25 mrad is demonstrated experimentally.read more
Citations
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Journal ArticleDOI
Spatial filtering with photonic crystals
TL;DR: In this paper, a review of the recent advances of the spatial filtering using the photonic crystals in different propagation regimes and for different geometries is presented, and the most evident configuration of filtering in Bragg regime (with the back-reflection) as well as in Laue regime with forward deflection.
Journal ArticleDOI
Photonic Crystal Microchip Laser
Darius Gailevičius,V. Koliadenko,Vytautas Purlys,Martynas Peckus,Victor B. Taranenko,Kestutis Staliunas +5 more
TL;DR: It is shown that the intracavity photonic crystals with spatial filtering functionality, can strongly improve the spatial characteristics of the microchip laser.
Journal ArticleDOI
Narrow stop band microwave filters by using hybrid generalized quasi-periodic photonic crystals
TL;DR: In this article, the microwave transmission spectra in hybrid quasi-periodic multilayer photonic structures are studied using the transfer matrix method approach (TMM) for a normal incident wave with transverse electric (TE) polarization.
Journal ArticleDOI
3D Manufacturing of Glass Microstructures Using Femtosecond Laser.
Agnė Butkutė,Linas Jonušauskas +1 more
TL;DR: In this paper, the underlying physical mechanism of material interaction with ultrashort pulses is discussed, highlighting how it can be exploited for volumetric, high-precision 3D processing.
Journal ArticleDOI
Super-collimation by axisymmetric photonic crystals
Vytautas Purlys,L. Maigyte,Darius Gailevičius,Martynas Peckus,Roaldas Gadonas,Kestutis Staliunas,Kestutis Staliunas +6 more
TL;DR: In this paper, the beam super-collimation by axisymmetric photonic crystals, specifically by periodic (in propagation direction) structure of layers of concentric rings, was investigated.
References
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Proceedings ArticleDOI
Defining, measuring, and optimizing laser beam quality
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Journal ArticleDOI
Spatial filtering of light by chirped photonic crystals
TL;DR: In this article, the authors proposed an efficient method for spatial filtering of light beams by propagating them through two-dimensional chirped photonic crystals, i.e., through the photonic structures with fixed transverse lattice period and with the longitudinal lattice periods varying along the direction of the beam propagation.