Abstract
We study the complex Laguerre-Gaussian (LG) spectrum of single-silica-particle-scattered light by finite-difference-time-domain (FDTD) simulation. We find that complex LG spectrum can be potentially utilized for 2-dimensional localization of a dielectric spherical particle.
| Original language | English |
|---|---|
| Title of host publication | CLEO |
| Subtitle of host publication | Applications and Technology, CLEO_AT 2019 |
| Publisher | Optica Publishing Group (formerly OSA) |
| ISBN (Print) | 9781943580576 |
| DOIs | |
| State | Published - 2019 |
| Externally published | Yes |
| Event | CLEO: Applications and Technology, CLEO_AT 2019 - San Jose, United States Duration: 5 May 2019 → 10 May 2019 |
Publication series
| Name | Optics InfoBase Conference Papers |
|---|---|
| Volume | Part F127-CLEO_AT 2019 |
| ISSN (Electronic) | 2162-2701 |
Conference
| Conference | CLEO: Applications and Technology, CLEO_AT 2019 |
|---|---|
| Country/Territory | United States |
| City | San Jose |
| Period | 5/05/19 → 10/05/19 |
Bibliographical note
Publisher Copyright:© 2019 The Author(s)
Funding
Figure3.Determinetheparticle’sazimuthalpositionH: a)UnwrappedphasedelaysofdifferentOAMmodesfordifferent azimuthal positionH; b)AOM phasespectrumofdetectedcomplexfieldifthe particle is locatedonH=\/8; c)CalculatedslopeoftheOAMphasespectrumas a functionofH. Moreover, the azimuthal position of particle can be determined by analyzing the OAM phase spectrum (i.e. ∢L#,%@C) of thedetected complex field. Ashsown iniF. 3g. athe ,urapped nwpehod afffeiesrOnAMtmodes(&≠3) changelinearlysa theaprletroitactesinetzhaiumthal directionwhen!"#@AB,%@Cilluminatesethaprlt.eiFigurce3.b demonstratestheOAM phase spectrum(&=0,…,6)ofdetected field ifthe particle islocated on azimuthalposition H=\/8: thehpasefoA MO mode changes linearly as the OAM order varies. As shown in iF. 3g. c, e taprhtli’seczaiumthal position is rppoortional to the slope of detected OAM phase spectrum and this can be potentially utilized to localize the particle’s azimuthal position. Acknowledgement: National Science Foundation (NSF) (ECCS-1509965); Vannevar Bush Faculty Fellowship sponsored by the Basic Research Office of the Assistant Secretary of Defense (ASD) for Research and Engineering (R&E) and funded by the Office of Naval Research (ONR) (N00014-16-1-2813); DSCA (4440646262). Reference: [1]M.Padgettetal., Nat. Photon. 5, 3432(011). [4] A. D’Errico et al., Optica, 4.11 (2017). [7] L. Zhou et al., Opt. Lett., 43.19 (2018).
| Funders | Funder number |
|---|---|
| DSCA | 4440646262 |
| National Science Foundation | ECCS-1509965 |
| Office of Naval Research | N00014-16-1-2813 |
| Astrophysics Science Division | |
| Office of the Assistant Secretary for Research and Technology |