Gaussian Beam Shaping: Diffraction Theory and Design

Dickey, Fred M.; Holswade, Scott C.

doi:10.1201/b17140-6

Cited by 20 publications

(26 citation statements)

References 19 publications

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“…In the low-light regime its solution gives the spatial photon probabilities, or alternatively, e.g., in the beam optics regime, the solution describes the beam shape. The ability to shape optical beams, from an intense beam down to the single-photon level, can be used to control some of their most important physical parameters, including their orbital angular momentum, spatial intensity, and evolution. , This enables us to tailor and control the interaction between light and matter. Therefore, beam-shaping techniques are very important and are used across many optical disciplines, e.g., optical tweezing, , microscopy, , and optical communications …”

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confidence: 99%

Nonlinear Beam Shaping with Plasmonic Metasurfaces

et al. 2015

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We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted second-harmonic wavefront is perfectly controlled. These concepts are demonstrated experimentally by the far-field generation of second-harmonic Airy and vortex beams from nonlinear binary phase computer-generated holograms and the perfect near-field generation of a Hermite–Gauss beam by precise amplitude and phase construction. We believe that these demonstrations open the door to use nonlinear metasurfaces for a variety of integrated nonlinear beam shaping devices.

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confidence: 99%

Nonlinear Beam Shaping with Plasmonic Metasurfaces

et al. 2015

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“…At the same time, beam shapers should not be considered off-the-shelf products as this could lead to several issues, i.e. divergence shifts, power fluctuations, pointing instabilities and beam spatial profile distortions (Dickey, 2014). Therefore, sufficient understanding of their capabilities and limitations is required before integrating them into beam delivery systems.…”

Section: Refractive Field Mapping Beam Shapersmentioning

confidence: 99%

Laser drilling with a top-hat beam of micro-scale high aspect ratio holes in silicon nitride

Nasrollahi

Penchev

Batal

et al. 2020

Journal of Materials Processing Technology

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“…Beam shaping is a prominent topic in various fields of optics. In laser physics, optical elements are commonly used to transform a Gaussian-shaped TEM00 mode into various spatial distributions that are defined by the application requirements 1 . For such developments, sophisticated theoretical analysis and elaborate designs of phase plates are utilized 2 .…”

Section: Introductionmentioning

confidence: 99%

“…What all of the above concepts have in common is the fact that only one final light distribution is realized, which is defined by the optical interplay between light source and secondary optical elements. To circumvent this limitation, mechanically tuneable elements are necessary, which result in a setup that is much more complicated 1 . While some applications can easily integrate elaborate optical designs with movable parts, our concept can be used in scenarios that cannot tolerate bulky components.…”

Section: Introductionmentioning

confidence: 99%

Real-time beam shaping without additional optical elements

et al. 2018

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Providing artificial light and enhancing the quality of the respective light sources is of continued interest in the fields of solid state, condensed matter, and semiconductor physics. Much research has been carried out to increase the luminous efficiency, lifetime and colour stability of such devices. However, the emission characteristics of a given light source do not necessarily comply with today’s often sophisticated applications. Here, beam shaping addresses the transformation of a given light distribution into a customized form. This is typically achieved by secondary optical elements often sporting elaborate designs, where the actual light source takes up only a small fraction of the system’s volume. Such designs limit the final light source to a single permanent operation mode, which can only be overcome by employing mechanically adjustable optical elements. Here we show that organic light-emitting diodes (OLEDs) can enable real-time regulation of a beam shape without relying on secondary optical elements and without using any mechanical adjustment. For a red light-emitting two-unit OLED architecture, we demonstrate the ability to continuously tune between strongly forward and strongly sideward emission, where the device efficiency is maintained at an application-relevant level ranging between 6 and 8% of external quantum efficiency for any chosen setting. In combination with additional optical elements, customizable and tuneable systems are possible, whereby the tuning stems from the light source itself rather than from the use of secondary optics.

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Gaussian Beam Shaping: Diffraction Theory and Design

Cited by 20 publications

References 19 publications

Nonlinear Beam Shaping with Plasmonic Metasurfaces

Nonlinear Beam Shaping with Plasmonic Metasurfaces

Laser drilling with a top-hat beam of micro-scale high aspect ratio holes in silicon nitride

Real-time beam shaping without additional optical elements

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