Influence of slow light effect on trapping force in optical tweezers

Autor:	Haotian Chen, Huichuan Lin, P. H. Jones, Ziyang Chen, Songjie Luo, Jixiong Pu
Rok vydání:	2022
Předmět:	Optical Tweezers Polystyrenes Microspheres Atomic and Molecular Physics and Optics
Zdroj:	Optics Letters. 47:710
ISSN:	1539-4794 0146-9592
Popis:	We investigate the optical trapping of polystyrene microspheres in optical tweezers. The transverse capture gradient forces of polystyrene microspheres with different numerical aperture are theoretically and experimentally evaluated by the power spectral density roll-off method. It is found that the trapping force of the experimental measurement is much stronger than that of the theoretical results. The discordance is attributed to the slow light effect near the focus, which has been found in recent years [Science 347, 857 (2015)10.1126/science.aaa3035; Opt. Express 18, 10822 (2010)10.1364/OE.18.010822; Opt. Commun. 332, 164 (2014)10.1016/j.optcom.2014.06.057]. The modified trapping force of the theoretical results by considering the slow light effect near the focus is well consistent with that of the experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2eb865178e30abb223eb47fadffc00f https://doi.org/10.1364/ol.448727 Zobrazit plný text záznamu