Přístupnostní navigace
E-přihláška
Vyhledávání Vyhledat Zavřít
Detail publikace
BOUCHAL, P. KAPITÁN, J. KONEČNÝ, M. ZBONČÁK, M. BOUCHAL, Z.
Originální název
Non-diffracting light in nature: Anomalously reflected self-healing Bessel beams from jewel scarabs
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
We report a study of spatial light modulation in the photonic structure of jewel scarabs, revealing the interplay of the polarization and phase control of light, which is not possible with the current optical technology. Phase measurements performed on jewel scarabs demonstrate that the polarization anomalous (helicity-preserving) reflection of light occurs together with alteration of the dynamic phase associated with the optical path length. This control of light differs from the operation of artificially prepared polarization-sensitive structures, shaping light through the geometric phase altered by the polarization transformation. Challenging three-dimensional imaging of the cuticle, requiring high-resolution quantitative mapping of steep phase changes, has been achieved owing to the optical performance of recently developed geometric-phase microscopy. We find that the cuticle of jewel scarabs is formed of micrometer-sized axicon cells, generating thousands of Bessel beams with subwavelength spot size. The nondiffracting features and the self-healing ability of the Bessel beams originating from the beetle Chrysina gloriosa are demonstrated experimentally. Considering Bragg reflection and shaping of RGB components of white light Bessel beams, we explain the spatial structuring of colors in microscopic images of jewel scarabs and reveal the conversion of colors when changing the distance from the cuticle. The functionality and performance of the cuticle axicon cells are discussed in comparison with high-aperture dielectric meta-axicons, and potential applications in colorimetric refractive index sensing are outlined.
Klíčová slova
Holography, Bessel beam, Phase contrast microscopy, Polarization, Bragg reflection, Geometric phases
Autoři
BOUCHAL, P.; KAPITÁN, J.; KONEČNÝ, M.; ZBONČÁK, M.; BOUCHAL, Z.
Vydáno
2. 12. 2019
Nakladatel
American Institute of Physics
ISSN
2378-0967
Periodikum
APL Photonics
Ročník
4
Číslo
12
Stát
Spojené státy americké
Strany od
1
Strany do
7
Strany počet
URL
http://dx.doi.org/10.1063/1.5125045
BibTex
@article{BUT160653, author="Petr {Bouchal} and Josef {Kapitán} and Martin {Konečný} and Marek {Zbončák} and Zdeněk {Bouchal}", title="Non-diffracting light in nature: Anomalously reflected self-healing Bessel beams from jewel scarabs", journal="APL Photonics", year="2019", volume="4", number="12", pages="1--7", doi="10.1063/1.5125045", issn="2378-0967", url="http://dx.doi.org/10.1063/1.5125045" }