Constructing 3D crystal templates for photonic band gap materials using holographic optical tweezers

Benito, D.; Carberry, David M.; Simpson, Stephen H.; Gibson, Graham M.; Padgett, Miles J.; Rarity, John; Miles, Mervyn J; Hanna, Simon

doi:10.1364/oe.16.013005

Cited by 40 publications

(35 citation statements)

References 26 publications

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“…In recent years, so-called nondiffracting wave fields have become an important and well-researched topic in the fields of optical trapping [1,2] and optical induction of photonic lattices in photosensitive media [3][4][5][6], as well as optical atom traps for Bose-Einstein condensates [7,8]. The distinctive feature of nondiffracting wave fields is a transversely modulated intensity distribution combined with a translation-invariant intensity in the direction of propagation [9], which makes an optical generation of largely expanded two-dimensional structures in variable structural sizes highly feasible.…”

Section: Introductionmentioning

confidence: 99%

Increasing the structural variety of discrete nondiffracting wave fields

2011

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We investigate discrete nondiffracting beams (DNBs) being the foundation of periodic and quasiperiodic intensity distributions. Besides the number of interfering plane waves, the phase relation among these waves is decisive to form a particular intensity lattice. In this manner, we systematize different classes of DNBs and present similarities as well as differences. As one prominent instance, we introduce the class of sixfold nondiffracting beams, offering four entirely different transverse intensity distributions: in detail, the hexagonal, kagome, and honeycomb pattern, as well as a hexagonal vortex beam. We further extend our considerations to quasiperiodic structures and show the changeover to Bessel beams. In addition, we introduce a highly flexible implementation of the experimental analog of DNBs, namely discrete pseudo-nondiffracting beams, and present locally resolved intensity and phase measurements, which underline the nondiffracting character of the generated wave fields.

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Section: Introductionmentioning

confidence: 99%

Increasing the structural variety of discrete nondiffracting wave fields

2011

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“…d) Right: FCC crystal template manufactured from 3 µm diameter silica spheres using HOT and depletion attraction bonding with a second layer of the crystal showing a line defect along one of the in‐plane directions (left). Adapted with permission . Copyright 2008, OSA Publishing.…”

Section: Digital Assembly Of Particles With Optical Tweezersmentioning

confidence: 99%

Digital Assembly of Colloidal Particles for Nanoscale Manufacturing

Kotnala

Zheng

2019

Part & Part Syst Charact

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From unravelling the most fundamental phenomena to enabling applications that impact our everyday lives, the nanoscale world holds great promise for science, technology, and medicine. However, the extent of its practical realization relies on manufacturing at the nanoscale. Among the various nanomanufacturing approaches being investigated, the bottom‐up approach involving assembly of colloidal nanoparticles as building blocks is promising. Compared to a top‐down lithographic approach, particle assembly exhibits advantages such as smaller feature size, finer control of chemical composition, less defects, lower material wastage, and higher scalability. The capability to assemble colloidal particles one by one or “digitally” has been heavily sought as it mimics the natural method of making matter and enables construction of nanomaterials with sophisticated architectures. An insight into the tools and techniques for digital assembly of particles, including their working mechanisms and demonstrated particle assemblies, is provided. Examples of nanomaterials and nanodevices are presented to demonstrate the strength of digital assembly in nanomanufacturing.

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“…The transition from multiple holographic point traps to optical potential landscapes is a smooth one, but underlying techniques differ essentially. While classical HOT already allow for the handling of multiple particles into two‐ and three‐dimensional crystal‐like structures , the creation of differently shaped traps offers even more possibilities, as they can be tailored to individual applications or, for example, reveal complex dynamic properties . As counterpart to point‐traps, one‐dimensionally extended optical traps – so called line tweezers – provide a highly asymmetric optical potential landscape where trapped objects are free to move in one transverse direction while they are confined in the other .…”

Section: Tailored Optical Energy Potential Landscapesmentioning

confidence: 99%

Advanced optical trapping by complex beam shaping

Woerdemann

Alpmann

Esseling

et al. 2013

Laser & Photonics Reviews

373

210

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Optical tweezers, a simple and robust implementation of optical micromanipulation technologies, have become a standard tool in biological, medical and physics research laboratories. Recently, with the utilization of holographic beam shaping techniques, more sophisticated trapping configurations have been realized to overcome current challenges in applications. Holographically generated higher‐order light modes, for example, can induce highly structured and ordered three‐dimensional optical potential landscapes with promising applications in optically guided assembly, transfer of orbital angular momentum, or acceleration of particles along defined trajectories. The non‐diffracting property of particular light modes enables the optical manipulation in multiple planes or the creation of axially extended particle structures. Alongside with these concepts which rely on direct interaction of the light field with particles, two promising adjacent approaches tackle fundamental limitations by utilizing non‐optical forces which are, however, induced by optical light fields. Optoelectronic tweezers take advantage of dielectrophoretic forces for adaptive and flexible, massively parallel trapping. Photophoretic trapping makes use of thermal forces and by this means is perfectly suited for trapping absorbing particles. Hence the possibility to tailor light fields holographically, combined with the complementary dielectrophoretic and photophoretic trapping provides a holistic approach to the majority of optical micromanipulation scenarios.

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Constructing 3D crystal templates for photonic band gap materials using holographic optical tweezers

Cited by 40 publications

References 26 publications

Increasing the structural variety of discrete nondiffracting wave fields

Increasing the structural variety of discrete nondiffracting wave fields

Digital Assembly of Colloidal Particles for Nanoscale Manufacturing

Advanced optical trapping by complex beam shaping

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