Number of the records: 1
Influence of weak reflections from dielectric interfaces on properties of optical trap
- 1.
SYSNO ASEP 0205631 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Influence of weak reflections from dielectric interfaces on properties of optical trap Author(s) Šerý, Mojmír (UPT-D) RID, SAI
Jákl, Petr (UPT-D) RID, ORCID, SAI
Ježek, Jan (UPT-D) RID, ORCID, SAI
Jonáš, Alexandr (UPT-D) RID, SAI, ORCID
Liška, M. (CZ)
Zemánek, Pavel (UPT-D) RID, SAI, ORCIDSource Title Proceedings of SPIE - The International society for optical engineering. Photonic, devices, and systems II. - Prague : SPIE, 2002 - ISSN 0277-786X Pages s. 624 - 629 Number of pages 9 s. Action Photonics Prague 2002 Event date 26.05.2002-29.05.2002 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords optical trap ; two-photon fluorescence ; position sensing Subject RIV BH - Optics, Masers, Lasers R&D Projects GA101/00/0974 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z2065902 - UPT-D Annotation It is studied theoretically and experimentally how a wave reflected from the surface influences the distance of the trapped sphere from the beam waist. The reflected wave interferes with the incident one and they create a standing wave component in the final axial intensity distribution. This component modulates the trapping potential and creates several equilibrium positions for the trapped sphere. When the beam waist approaches the surface, the potential profiles changes and causes jumps of the trapped objects to a deeper potential well. We proved that these unwanted jumps of the trapped objects between the neighboring equilibrium positions can be eliminat ed by proper size of the sphere. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2004
Number of the records: 1