Experimental demonstration of a tunable photonic hook by a partially illuminated dielectric microcylinder.

التفاصيل البيبلوغرافية
العنوان:	Experimental demonstration of a tunable photonic hook by a partially illuminated dielectric microcylinder.
المؤلفون:	Minin IV, Minin OV, Liu CY, Wei HD, Geints YE, Karabchevsky A
المصدر:	Optics letters [Opt Lett] 2020 Sep 01; Vol. 45 (17), pp. 4899-4902.
نوع المنشور:	Journal Article
اللغة:	English
بيانات الدورية:	Publisher: Optica Publishing Group Country of Publication: United States NLM ID: 7708433 Publication Model: Print Cited Medium: Internet ISSN: 1539-4794 (Electronic) Linking ISSN: 01469592 NLM ISO Abbreviation: Opt Lett Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة:	Publication: Washington, DC : Optica Publishing Group Original Publication: New York, Optical Society of America.
مستخلص:	In this Letter, we report the experimental observations of a tunable curved photonic nanojet (photonic hook) generated by a 5 µm polydimethylsiloxane microcylinder deposited on a silicon substrate and illuminated by 405 nm laser beam. A moveable opaque aluminum-mask is mounted in front of the microcylinder implementing partial illumination and imparting spatial curvature to the photonic nanojet. Experimental results of main parameters (tilt angle, width, and intensity) of emerging photonic hooks exhibit close agreement with numerical predictions of the near-field optical structures. The experimentally measured full widths at half-maximum of photonic hooks are 0.48 λ , 0.56 λ , and 0.76 λ for tilt angles of θ =0 ^∘ , 5.7°, and 20.1°, respectively. Photonic hooks possess great potential in complex manipulation such as super-resolution imaging, surface fabrication, and optomechanical manipulation along curved trajectories.
تواريخ الأحداث:	Date Created: 20200902 Latest Revision: 20200901
رمز التحديث:	20231215
DOI:	10.1364/OL.402248
PMID:	32870885
قاعدة البيانات:	MEDLINE

الوصف
تدمد:	1539-4794
DOI:	10.1364/OL.402248