Počet záznamů: 1
Direct measurements of the extraordinary optical momentum and transverse spin-dependent force using a nano-cantilever
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SYSNO ASEP 0464552 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Direct measurements of the extraordinary optical momentum and transverse spin-dependent force using a nano-cantilever Tvůrce(i) Antognozzi, M. (GB)
Bermingham, C.R. (GB)
Harniman, R.L. (GB)
Simpson, Stephen Hugh (UPT-D) RID, SAI
Senior, J. (GB)
Hayward, I.R. (GB)
Hoerber, H. (GB)
Dennis, M.R. (GB)
Bekshaev, A.Y. (UA)
Bliokh, K.Y. (UA)
Nori, F. (JP)Celkový počet autorů 11 Zdroj.dok. Nature Physics. - : Nature Publishing Group - ISSN 1745-2473
Roč. 12, č. 8 (2016), s. 731-735Poč.str. 5 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova radiation-pressure ; angular-momentum ; microscopy Vědní obor RIV BH - Optika, masery a lasery CEP LO1212 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UPT-D - RVO:68081731 UT WOS 000381239800010 EID SCOPUS 84964301734 DOI 10.1038/NPHYS3732 Anotace Radiation pressure is associated with the momentum of light(1,2), and it plays a crucial role in a variety of physical systems(3-6). It is usually assumed that both the optical momentum and the radiation-pressure force are naturally aligned with the propagation direction of light, given by its wavevector. Here we report the direct observation of an extraordinary optical momentum and force directed perpendicular to the wavevector, and proportional to the optical spin (degree of circular polarization). Such an optical force was recently predicted for evanescent waves' and other structured fields'. It can be associated with the 'spin-momentum' part of the Poynting vector, introduced by Belinfante in field theory 75 years ago(9-11). We measure this unusual transverse momentum using a femtonewton-resolution nano-cantilever immersed in an evanescent optical field above the total internal reflecting glass surface. Furthermore, the measured transverse force exhibits another polarization-dependent contribution determined by the imaginary part of the complex Poynting vector. By revealing new types of optical forces in structured fields, our findings revisit fundamental momentum properties of light and enrich optomechanics. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2017
Počet záznamů: 1