[Home ] [Archive]   [ فارسی ]  
:: Volume 23 - ::
ICOP & ICPET 2017, 23 - : 429-432 Back to browse issues page
Optical trapping by radially and azimuthally polarized beams
Habib Moradi * 1, Ebrahim Karimi , Faegheh Hajizadeh
Abstract:   (1109 Views)

Implementing laser beams possessing desired spatial structure can provide a potential to control optical forces of
optical tweezers in the trapping of micro and nanoparticles. Cylindrical vector beams, in particular, are good candidates due to
their exotic optical features. For instance, a radially polarized beam generates a focus volume about 30 percent smaller than
that of a Gaussian beam. Here, we experimentally study the optical trapping stiffness for both cases of micro- and nanometer
particles. The results for 2.1-micron polystyrene beads show that the trapping force in the axial direction is ~3 times stronger
for the radial polarization than that of a linear polarized beam. Finally, we show that such improvement in trapping depends on
the size of the trapped particle.


Keywords: Optical tweezers, trap stiffness, cylindrical vector beam, radial polarization, azimuthal polarization
Full-Text [PDF 838 kb]   (722 Downloads)    
Type of Study: Research | Subject: Special
Send email to the article author

Add your comments about this article
Your username or Email:


XML   Persian Abstract   Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Moradi H, Karimi E, Hajizadeh F. Optical trapping by radially and azimuthally polarized beams. ICOP & ICPET. 2017; 23 :429-432
URL: http://opsi.ir/article-1-1133-en.html

Volume 23 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3858