| 000 | 04710nlm1a2200481 4500 | ||
|---|---|---|---|
| 001 | 665344 | ||
| 005 | 20231030042000.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\36543 | ||
| 035 | _aRU\TPU\network\36542 | ||
| 090 | _a665344 | ||
| 100 | _a20210914a2021 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aGB | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aSpecular-reflection photonic hook generation under oblique illumination of a super-contrast dielectric microparticle _fYu. E. Geynts, A. A. Zemlyanov, I. V. Minin, O. V. Minin |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 32 tit.] | ||
| 330 | _aThe possibility of overcoming the critical condition for localized photonic nanojet (PNJ) upon plane optical wave diffraction at mesoscale dielectric particle, which is commonly known as 'the refractive index contrast is less than two', was recently reported in our works. To this end, the novel geometrical scheme of PNJ generation in 'reflection mode' was proposed recently based on a super-contrast microparticle placed near a flat mirror. In this paper, through the numerical FDTD calculations of optical near-field structure of 2D and 3D dielectric microparticles (cylinder, sphere) we extend our considerations to the case of oblique particle-at-mirror illumination and present new physical phenomena arising in the considered photonic geometry. Specifically, we report on the generation of a quasi-retrograde PNJ which follows the inclined particle illumination and propose a new principle for obtaining a curvilinear photonic flux in the form of a 'specular-reflection photonic hook' (s-Hook) in the opposite to the illuminated wavevector direction. Two different regimes of s-Hook formation are analyzed by changing the direction of light incidence on a dielectric particle and by flat mirror inclination. Self-bending property of PNJ at oblique illumination is investigated The possibility of overcoming the critical condition for localized photonic nanojet (PNJ) upon plane optical wave diffraction at mesoscale dielectric particle, which is commonly known as 'the refractive index contrast is less than two', was recently reported in our works. | ||
| 330 | _aTo this end, the novel geometrical scheme of PNJ generation in 'reflection mode' was proposed recently based on a super-contrast microparticle placed near a flat mirror. In this paper, through the numerical FDTD calculations of optical near-field structure of 2D and 3D dielectric microparticles (cylinder, sphere) we extend our considerations to the case of oblique particle-at-mirror illumination and present new physical phenomena arising in the considered photonic geometry. Specifically, we report on the generation of a quasi-retrograde PNJ which follows the inclined particle illumination and propose a new principle for obtaining a curvilinear photonic flux in the form of a 'specular-reflection photonic hook' (s-Hook) in the opposite to the illuminated wavevector direction. Two different regimes of s-Hook formation are analyzed by changing the direction of light incidence on a dielectric particle and by flat mirror inclination. Self-bending property of PNJ at oblique illumination is investigated. | ||
| 461 | _tJournal of Optics | ||
| 463 |
_tVol. 23, iss. 4 _v[045602, 7 p.] _d2021 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aphotonic hook | |
| 610 | 1 | _acurvilinear field localization | |
| 610 | 1 | _aretrograde reflection | |
| 610 | 1 | _astructured light | |
| 610 | 1 | _asuper-contrast microparticle | |
| 610 | 1 | _aосвещение | |
| 610 | 1 | _aмикрочастицы | |
| 610 | 1 | _aоптические волны | |
| 610 | 1 | _aдифракция | |
| 701 | 1 |
_aGeynts _bYu. E. _gYury Elmarovich |
|
| 701 | 1 |
_aZemlyanov _bA. A. _gAleksandr Anatoljevich |
|
| 701 | 1 |
_aMinin _bI. V. _cphysicist _cSenior researcher of Tomsk Polytechnic University, Doctor of technical sciences _f1960- _gIgor Vladilenovich _2stltpush _3(RuTPU)RU\TPU\pers\37571 |
|
| 701 | 1 |
_aMinin _bO. V. _cphysicist _cprofessor of Tomsk Polytechnic University, Doctor of technical sciences _f1960- _gOleg Vladilenovich _2stltpush _3(RuTPU)RU\TPU\pers\44941 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИнженерная школа неразрушающего контроля и безопасности _bОтделение электронной инженерии _h7977 _2stltpush _3(RuTPU)RU\TPU\col\23507 |
| 801 | 2 |
_aRU _b63413507 _c20210914 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1088/2040-8986/abd985 | |
| 942 | _cCF | ||