Surface roughness influence on photonic nanojet parameters of dielectric microspheres

被引:0
作者
Geints, Y. E. [1 ]
Panina, E. K. [1 ]
机构
[1] RAS, VE Zuev Inst Atmospher Opt, SB, Acad Zuev Sq 1, Tomsk 634055, Russia
关键词
photonic nanojet; dielectric microsphere; near-field focusing; surface roughness; LIGHT; NANOPARTICLES; BACKSCATTERING; AEROSOL; OPTICS;
D O I
10.18287/2412-6179-CO-1280
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
All naturally found and technologically fabricated solid microparticles possess surface rough-ness. Upon optical wave scattering from such particles, in addition to its geometric shape, the sur-face relief becomes an important morphological factor determining the optical properties of the scatterer. We present results of the numerical 3D-simulations of focusing an optical wave with a dielectric microsphere with randomly distributed surface roughness. We address different cases of azimuthally symmetric and asymmetric distortions of the particle surface. We show that the key parameters of the near-field focal region (intensity, longitudinal and transverse dimensions) re-ferred to as a photonic nanojet (PNJ) are sensitive to changes in the microsphere surface texture. Two important PNJ parameters, the peak intensity and the longitudinal length, are subject to more prominent changes. The influence of the optical contrast (relative refractive index) of the micro -sphere on PNJ parameters is investigated in detail. The possibility of reducing the influence of sur-face roughness on the near-field focusing strength by microsphere watering (water-uptake) is demonstrated.
引用
收藏
页码:559 / +
页数:9
相关论文
共 31 条
[1]   Photonic jet breakthrough for direct laser microetching using nanosecond near-infrared laser [J].
Abdurrochman, Andri ;
Lecler, Sylvain ;
Mermet, Frederic ;
Tumbelaka, Bernard Y. ;
Serio, Bruno ;
Fontaine, Joel .
APPLIED OPTICS, 2014, 53 (31) :7202-7207
[2]   Application of micro solid immersion lens as probe for near-field scanning microscopy [J].
Assafrao, A. C. ;
Kumar, N. ;
Wachters, A. J. H. ;
Pereira, S. F. ;
Urbach, H. P. ;
Brun, M. ;
Olivier, Segolene .
APPLIED PHYSICS LETTERS, 2014, 104 (10)
[3]  
Astratov VN, 2010, SPIE NEWSROOM, DOI [10.1117/2.1201002.002578, DOI 10.1117/2.1201002.002578]
[4]   Photonic nanojet enhancement of backscattering of light by nanoparticles: a potential novel visible-light ultramicroscopy technique [J].
Chen, ZG ;
Taflove, A ;
Backman, V .
OPTICS EXPRESS, 2004, 12 (07) :1214-1220
[5]   Optical forces on metallic nanoparticles induced by a photonic nanojet [J].
Cui, Xudong ;
Erni, Daniel ;
Hafner, Christian .
OPTICS EXPRESS, 2008, 16 (18) :13560-13568
[6]   Three-dimensional subwavelength confinement of light with dielectric microspheres [J].
Devilez, Alexis ;
Bonod, Nicolas ;
Wenger, Jerome ;
Gerard, Davy ;
Stout, Brian ;
Rigneault, Herve ;
Popov, Evgeny .
OPTICS EXPRESS, 2009, 17 (04) :2089-2094
[7]   Simultaneous micromanipulation in multiple planes using a self-reconstructing light beam [J].
Garcés-Chávez, V ;
McGloin, D ;
Melville, H ;
Sibbett, W ;
Dholakia, K .
NATURE, 2002, 419 (6903) :145-147
[8]   Systematic study and comparison of photonic nanojets produced by dielectric microparticles in 2D-and 3D-spatial configurations [J].
Geints, Yu E. ;
Zemlyanov, A. A. ;
Minin, O., V ;
Minin, I., V .
JOURNAL OF OPTICS, 2018, 20 (06)
[9]   Microaxicon-generated photonic nanojets [J].
Geints, Yu. E. ;
Zemlyanov, A. A. ;
Panina, E. K. .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2015, 32 (08) :1570-1574
[10]   Control over parameters of photonic-nanojets of dielectric microspheres [J].
Geints, Yu. E. ;
Panina, E. K. ;
Zemlyanov, A. A. .
OPTICS COMMUNICATIONS, 2010, 283 (23) :4775-4781