Compact optical tweezer with the capability of dynamic control

Korobtsov, A. V.; Котова, С. П.; Losevsky, N. N.; Mayorova, A. M.; Samagin, S. A.

doi:10.18287/jbpe-2015-1-2-154

Cited by 6 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thanks to the use of this technique, other devices and applications has been proposed, e.g. wavefront correctors 13,33 , microlenses 34 , multioptical devices 35,36 or optical tweezers 37,38 . Other techniques to fabricate LC lenses have been proposed in recent years.…”

Section: In This Work a Novel Technique To Create Positive-negative mentioning

confidence: 99%

Positive-negative tunable liquid crystal lenses based on a microstructured transmission line

Algorri

Morawiak

Bennis

et al. 2020

Sci Rep

View full text Add to dashboard Cite

In this work, a novel technique to create positive-negative tunable liquid crystal lenses is proposed and experimentally demonstrated. This structure is based on two main elements, a transmission line acting as a voltage divider and concentric electrodes that distribute the voltage homogeneously across the active area. This proposal avoids all disadvantages of previous techniques, involving much simpler fabrication process (a single lithographic step) and voltage control (one or two sources). In addition, low voltage signals are required. Lenses with switchable positive and negative focal lengths and a simple, low voltage control are demonstrated. Moreover, by using this technique other optical devices could be engineered, e.g. axicons, Powell lenses, cylindrical lenses, Fresnel lenses, beam steerers, optical vortex generators, etc. For this reason, the proposed technique could open new venues of research in optical phase modulation based on liquid crystal materials.

show abstract

Section: In This Work a Novel Technique To Create Positive-negative mentioning

confidence: 99%

Positive-negative tunable liquid crystal lenses based on a microstructured transmission line

Algorri

Morawiak

Bennis

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Its value must be in the range between 100 kΩ/sq and a few MΩ/sq for lens diameters in the order of millimeters [112]. This technique has also been proposed for wavefront correctors [54,113], multi-optical devices [114,115] or optical tweezers [116,117]. Intense research on this technique resulted in a commercial device by Flexible Optical B.V. (OKO Tech) [118] (Figure 5).…”

Section: Adaptive-focus Liquid Crystal Lensesmentioning

confidence: 99%

Liquid Crystal Optical Device

Bennis¹,

Jaroszewicz²

2020

View full text Add to dashboard Cite

Polarization is a very useful parameter of a light beam in many optical measurements. Improvement of holographic systems requires optical elements which need a diffused and depolarized light beam. This paper describes a simple monochromatic depolarizer based on a pure vertically aligned liquid crystal without pretilt. In this work we present an extended description of depolarizer by analyzing its electro-optic properties measured in spatial and time domains with the use of crossed polarizers and polarimetric configurations. Crossed polarizers setup provides information on spatial and temporal changes of microscopic textures while polarimetric measurement allows to measure voltage and time dependence of degree of polarization. Three different thicknesses, i.e., 5 μm, 10 μm and 15 μm have been manufactured in order to analyze another degree of freedom for this type of depolarizer device based on a liquid crystals' material. Consideration of the light scattering capability of the cell is reported.

show abstract

“…Its value must be in the range between 100 kΩ/sq and a few MΩ/sq for lens diameters in the order of millimeters [112]. This technique has also been proposed for wavefront correctors [54,113], multi-optical devices [114,115] or optical tweezers [116,117]. Intense research on this technique resulted in a commercial device by Flexible Optical B.V. (OKO Tech) [118] (Figure 5).…”

Section: Adaptive-focus Liquid Crystal Lensesmentioning

confidence: 99%

Recent Advances in Adaptive Liquid Crystal Lenses

et al. 2019

View full text Add to dashboard Cite

An adaptive-focus lens is a device that is capable of tuning its focal length by means of an external stimulus. Numerous techniques for the demonstration of such devices have been reported thus far. Moving beyond traditional solutions, several new approaches have been proposed in recent years based on the use of liquid crystals, which can have a great impact in emerging applications. This work focuses on the recent advances in liquid crystal lenses with diameters larger than 1 mm. Recent demonstrations and their performance characteristics are reviewed, discussing the advantages and disadvantages of the reported technologies and identifying the challenges and future prospects in the active research field of adaptive-focus liquid crystal (LC) lenses.

show abstract

Compact optical tweezer with the capability of dynamic control

Cited by 6 publications

References 12 publications

Positive-negative tunable liquid crystal lenses based on a microstructured transmission line

Positive-negative tunable liquid crystal lenses based on a microstructured transmission line

Liquid Crystal Optical Device

Recent Advances in Adaptive Liquid Crystal Lenses

Contact Info

Product

Resources

About