Wavefront correction of spatial light modulators using an optical vortex image

Jesacher, Alexander; Schwaighofer, Andreas; Fürhapter, Severin; Maurer, Christian; Bernet, Stefan; Ritsch‐Marte, Monika

doi:10.1364/oe.15.005801

Cited by 175 publications

(100 citation statements)

References 8 publications

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“…The vortex donut shape of the point spread function (PSF) is evident, and the characteristic dip in the MTF is shown. The slight asymmetry in the PSF suggests some astigmatism in our post-focal instrument (see Jesacher et al 2007). With good seeing conditions, the vortex phase-diverse images should show a blurring caused by the convolution of the object image with the donut-shaped PSF.…”

Section: Preliminary Resultsmentioning

confidence: 94%

Detecting photons with orbital angular momentum in extended astronomical objects: application to solar observations

Uribe-Patarroyo

Alvarez-Herrero

Ariste³

et al. 2010

A&A

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Context. The orbital angular momentum (OAM) of the photon is a property of light from astronomical objects that has not yet been measured. We propose a method of measuring the OAM spectrum of light from an extended natural source, the Sun. Relating the OAM spectrum of different solar areas to its structures could lead to a novel remote sensing technique. Aims. We present a method for measuring the OAM spectrum of solar photons. Methods. The THEMIS telescope is being used with a novel phase-diversity technique. A spatial light modulator is placed on one pupil image, and an ad-hoc optical setup allows the measurement of two simultaneous phase-diverse images in the same CCD, with equal optical paths. Results. Preliminary results show that very good seeing is mandatory for this kind of observation. The method works in the laboratory, and good seeing conditions in the 2010 campaign are being awaited.

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Section: Preliminary Resultsmentioning

confidence: 94%

Detecting photons with orbital angular momentum in extended astronomical objects: application to solar observations

Uribe-Patarroyo

Alvarez-Herrero

Ariste³

et al. 2010

A&A

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“…This, along with tailoring of beam proles could lead to improved accuracies and printing times. 106 Another approach for improving the accuracy could come by employing multiple trapping beams, which interfere together to create a complex pattern in the optical energy landscape leading to specic energy minima. 96,97 These can be controlled with great precision possibly leading to a higher printing accuracy.…”

Section: Nanofabricationmentioning

confidence: 99%

Optical trapping and manipulation of plasmonic nanoparticles: fundamentals, applications, and perspectives

et al. 2014

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This feature article discusses the optical trapping and manipulation of plasmonic nanoparticles, an area of current interest with potential applications in nanofabrication, sensing, analytics, biology and medicine. We give an overview over the basic theoretical concepts relating to optical forces, plasmon resonances and plasmonic heating. We discuss fundamental studies of plasmonic particles in optical traps and the temperature profiles around them. We place a particular emphasis on our own work employing optically trapped plasmonic nanoparticles towards nanofabrication, manipulation of biomimetic objects and sensing.

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“…33 We take advantage of the fact that the SLM can be used to correct for aberrations, improving the quality of the traps. In addition, the SLM can be used as the principal component of a wavefront sensor either by emulating a Shack-Hartmann sensor, 34 optimizing higher-order modes, 35 or interfering different parts of the SLM. 36,37 We divide the SLM into sub-apertures, each of which is used to project a spot onto a different part of the sample.…”

Section: Aberration Correctionmentioning

confidence: 99%

A compact holographic optical tweezers instrument

Gibson

Bowman

Linnenberger

et al. 2012

Review of Scientific Instruments

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Visual and dynamical measurement of Rayleigh-Benard convection by using fiber-based digital holographic interferometry J. Appl. Phys. 112, 113113 (2012) Guide-star-based computational adaptive optics for broadband interferometric tomography Appl. Phys. Lett. 101, 221117 (2012) Limits of elemental contrast by low energy electron point source holography J. Appl. Phys. 110, 094305 (2011) Cantilever biosensor reader using a common-path, holographic optical interferometer Appl. Phys. Lett. 97, 221110 (2010) Extended depth of focus in a particle field measurement using a single-shot digital hologram Appl. Phys. Lett. 95, 201103 (2009) Additional information on Rev. Sci. Instrum. Holographic optical tweezers have found many applications including the construction of complex micron-scale 3D structures and the control of tools and probes for position, force, and viscosity measurement. We have developed a compact, stable, holographic optical tweezers instrument which can be easily transported and is compatible with a wide range of microscopy techniques, making it a valuable tool for collaborative research. The instrument measures approximately 30×30×35 cm and is designed around a custom inverted microscope, incorporating a fibre laser operating at 1070 nm. We designed the control software to be easily accessible for the non-specialist, and have further improved its ease of use with a multi-touch iPad interface. A high-speed camera allows multiple trapped objects to be tracked simultaneously. We demonstrate that the compact instrument is stable to 0.5 nm for a 10 s measurement time by plotting the Allan variance of the measured position of a trapped 2 μm silica bead. We also present a range of objects that have been successfully manipulated.

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Wavefront correction of spatial light modulators using an optical vortex image

Cited by 175 publications

References 8 publications

Detecting photons with orbital angular momentum in extended astronomical objects: application to solar observations

Detecting photons with orbital angular momentum in extended astronomical objects: application to solar observations

Optical trapping and manipulation of plasmonic nanoparticles: fundamentals, applications, and perspectives

A compact holographic optical tweezers instrument

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