Generation of Photonic Hooks from Patchy Microcylinders

oleh: Fen Tang, Qingqing Shang, Songlin Yang, Ting Wang, Sorin Melinte, Chao Zuo, Ran Ye

Format: Article
Diterbitkan: MDPI AG 2021-10-01

Deskripsi

The photonic hook (PH) is a new type of curved light beam, which has promising applications in various fields such as nanoparticle manipulation, super-resolution imaging, and so forth. Herein, we proposed a new approach of utilizing patchy microcylinders for the generation of PHs. Numerical simulation based on the finite-difference time-domain method was used to investigate the field distribution characteristics of the PHs. By rotating the patchy microcylinder, PHs with different curvatures can be effectively generated, and the PH with a bending angle of 28.4<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mo>∘</mo></msup></semantics></math></inline-formula> and a full-width-half-maximum of 0.36 <inline-formula><math display="inline"><semantics><mi>λ</mi></semantics></math></inline-formula> can be obtained from 1 <inline-formula><math display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m-diameter patchy microcylinders.