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ICOP & ICPET 2017, 23 - : 445-448 Back to browse issues page
In-depth optical trapping by tuning correction collar of dry objective lens
Hossein Gorjizadeh Alinezhad Mr * 1, Seyed Nader Seyed Reihani
Abstract:   (991 Views)

Optimized optical tweezersre indispensable tools for micromanipulation for biological tissues. Using electromagnetic theory the spatial intensity profile at the  afocus of a dry objective lens and its trapping stiffness are calculated. Presence of mediums with different refractive indices after the objective introduces significant amounts of spherical aberrations, which degrades the strength of the trap. Here we have shown, that tuning the correction collar of the objective on a value larger than the thickness of the coverslip can compensate for this aberration, which in turn maximizes the trapping stiffness. This tuning possibility allows for trapping at desired depth of the sample under investigation with optical tweezers

Keywords: Spherical aberration, Optical tweezers, Correction collar value of dry objective lens, Optimal depth
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Type of Study: Research | Subject: Special
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Gorjizadeh Alinezhad H, Seyed Reihani S N. In-depth optical trapping by tuning correction collar of dry objective lens. ICOP & ICPET. 2017; 23 :445-448
URL: http://opsi.ir/article-1-1276-en.html

Volume 23 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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