Open AccessOptical trapping and arrangement with reconfigurable “bottle” beam for digital holographic microscopy
Author(s) -
N. V. Shostka,
Bogdan V. Sokolenko,
O. S. Karakcheva,
D. A. Poletaev,
А. О. Титова,
Andrei Prisyazhniuk,
I. A. Ismailov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1410/1/012162
Subject(s) - optical tweezers , holography , optics , digital holographic microscopy , materials science , microscopy , tweezers , beam (structure) , optical vortex , digital holography , computer generated holography , trapping , optical microscope , laser , optoelectronics , physics , scanning electron microscope , ecology , biology
The design and construction of optical tweezers based on uniaxial crystal anisotropy for generation of adjustable “bottle” beam trap carrying optical vortex with orbital angular momentum is considered. In coupling with digital holographic microscopy, optical trapping becomes a high precision instrument for visualization, shape definition and refractivity measurements of isolated micro structures and biological objects in-situ. The non-destructive and sterile non-contact tweezing of specimens or their parts in localized intensity minima of coherent vortex beam was performed with using of 200 mW semiconductor 532 nm trapping laser and LiNbO 3 crystal. Visualization and position control of trapped marine centric diatoms was performed by a lens-free axial digital holographic microscopy in liquid medium.