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Michelson Interferometer and Optical Metrology

[November 11, 2019]
With VirtualLab Fusion, especially with the help of non-sequential field tracing, we show the working principle of a white-light Michelson interferometer, and demonstrate how it can be applied for optical metrology.
[November 11, 2019]

With VirtualLab Fusion, especially with the help of non-sequential field tracing, we show the working principle of a white-light Michelson interferometer, and demonstrate how it can be applied for optical metrology.

Since the famous Michelson-Morley experiment in 1887, the Michelson interferometer and its variations have continued to play an important role in optical research. Nowadays, one can still often find optical systems configured in the form of a Michelson interferometer, for example, in coherent scanning interferometry. With VirtualLab Fusion, especially with the help of non-sequential field tracing, we show the working principle of a white-light Michelson interferometer, and demonstrate how it can be applied for optical metrology.

With VirtualLab Fusion, especially with the help of non-sequential field tracing, we show the working principle of a white-light Michelson interferometer, and demonstrate how it can be applied for optical metrology.
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Analysis of High-NA Lenses

[October 30, 2019]
We show effects for specific examples of objective lenses and demonstrate how to analyse focal spots using different detectors in VirtualLab Fusion.
[October 30, 2019]

We show effects for specific examples of objective lenses and demonstrate how to analyse focal spots using different detectors in VirtualLab Fusion.

High-NA (numerical aperture) lenses are typically used in optical microscopy or lithography, among other applications. It is known that the impact of the vectorial nature of electromagnetic fields is not negligible in such situations. A well-known effect that exemplifies the above is the asymmetry exhibited by the focal spot generated by a high-NA lens focusing a linearly polarized circular beam: the focal spot ceases to be circular and appears elongated. We show these effects for specific examples of objective lenses and demonstrate how to analyse focal spots using different detectors in VirtualLab Fusion.

We show effects for specific examples of objective lenses and demonstrate how to analyse focal spots using different detectors in VirtualLab Fusion.
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Poisson Spot Simulation & Double-Slit Modeling

[October 17, 2019]
With the help of programmable functions, the diffraction effects induced by different obstacles can be studied.
[October 17, 2019]

With the help of programmable functions, the diffraction effects induced by different obstacles can be studied.

The first-time observation of Poisson’s (or Arago’s) spot in 1818 constituted one of the most relevant experiments in the history of optics, helping discard the (at the time) favored position of attributing a corpuscular nature to light. When Fresnel presented his theory of diffraction before the French Academy of Sciences, Poisson, a member of the committee, scoffed at the fact that Fresnel’s approach predicted a bright spot in the shadow of a circular obstacle placed in the way of a beam of light. Here, we demonstrate this effect in VirtualLab Fusion, and, with the help of programmable functions, also the diffraction effects caused by different obstacles can be studied. For the latter case, we present an example of the modeling of a double-slit via a functional embodiment.

With the help of programmable functions, the diffraction effects induced by different obstacles can be studied.
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Slanted Gratings

[October 10, 2019]
We show, in accordance to existing examples from literature, how to model slanted gratings with different geometries with the Fourier modal method (FMM) in VirtualLab Fusion.
[October 10, 2019]

We show, in accordance to existing examples from literature, how to model slanted gratings with different geometries with the Fourier modal method (FMM) in VirtualLab Fusion.

Slanted gratings have been found to be of advantage in lightguide-based display systems for AR/MR applications. Such gratings often have periods that are comparable to the wavelength. Therefore, rigorous computational methods must be used to evaluate their performance. We show, in accordance with existing examples from literature, how to model slanted gratings with different geometries using the Fourier modal method (FMM) in VirtualLab Fusion. Additionally, customized slanted gratings can be designed with the help of parametric optimization.

We show, in accordance to existing examples from literature, how to model slanted gratings with different geometries with the Fourier modal method (FMM) in VirtualLab Fusion.
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Large-Angle Dot Projector

[September 17, 2019]
In VirtualLab Fusion, by connecting different field solvers, we demonstrate how a dot project works.
[September 17, 2019]

In VirtualLab Fusion, by connecting different field solvers, we demonstrate how a dot project works.

A large-angle dot projector is the key optical component in Apple’s Face ID, which casts a structured dot pattern onto the face so as to create a 3D facial map. The dot projection system often employs an array of VCSEL units. Light from the VCSEL array is first collimated by a lens system, and then replicated by a two-dimensional grating into a large angular range. Simulation of such systems would require an appropriate model of the VCSEL source, a dependable handling of the lens system, and a rigorous method for gratings with relatively small periods. In VirtualLab Fusion, this connection of different field solvers is par for the course; we use this ability below in a demonstration of how a dot projector works.

In VirtualLab Fusion, by connecting different field solvers, we demonstrate how a dot project works.
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EOS Diffractive Optics 2019 – Attend our Talks!

[September 11, 2019]
Next week the conference will take place in Jena. There are several talks with speakers and co-authors from LightTrans, covering a wide spectrum of topics – from AR & MR glasses to volume scatterers. Don't miss the chance to be part of this anniversary topical meeting and attend our talks!
[September 11, 2019]

Next week the conference will take place in Jena. There are several talks with speakers and co-authors from LightTrans, covering a wide spectrum of topics – from AR & MR glasses to volume scatterers. Don't miss the chance to be part of this anniversary topical meeting and attend our talks!

Welcome to the
EOS Topical Meeting on
Diffractive Optics 2019 in Jena!

Next week this exciting conference will take place in Jena. Have a look at our talks and register now!

Jena, Germany | 16 – 19 September

Next week the conference will take place in Jena. There are several talks with speakers and co-authors from LightTrans, covering a wide spectrum of topics – from AR & MR glasses to volume scatterers. Don't miss the chance to be part of this anniversary topical meeting and attend our talks!
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Tightly Focused Light

[September 02, 2019]
We demonstrate, using the software VirtualLab Fusion, how different polarization states (e.g. radial) and aperture shapes (e.g. annular) may influence the electromagnetic field in the focal region.
[September 02, 2019]

We demonstrate, using the software VirtualLab Fusion, how different polarization states (e.g. radial) and aperture shapes (e.g. annular) may influence the electromagnetic field in the focal region.

How to focus light into an ever-smaller spot is an ever-present question in the optics community. Various approaches with the aim to focus light tightly have been developed, particularly of late. Investigation of light focusing under a high-NA configuration often requires fully vectorial electromagnetic simulation techniques. We demonstrate, using the software VirtualLab Fusion, how different polarization states (e.g. radial) and aperture shapes (e.g. annular) may influence the electromagnetic field in the focal region. Such analyzes can be done either with idealized lenses, or with real lenses with explicit structure and material information.

We demonstrate, using the software VirtualLab Fusion, how different polarization states (e.g. radial) and aperture shapes (e.g. annular) may influence the electromagnetic field in the focal region.
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Customize VirtualLab Fusion to Fit Your Needs!

[August 23, 2019]
We would like to provide full flexibility in VirtualLab Fusion so as to be able to meet the specific needs of the wide range of modeling or design tasks that can be tackled with the software. This versatility can be realized with various types of programmable elements in VirtualLab, from source to detectors, through components, and many more.
[August 23, 2019]

We would like to provide full flexibility in VirtualLab Fusion so as to be able to meet the specific needs of the wide range of modeling or design tasks that can be tackled with the software. This versatility can be realized with various types of programmable elements in VirtualLab, from source to detectors, through components, and many more.

We would like to provide full flexibility in VirtualLab Fusion so as to be able to meet the specific needs of the wide range of modeling or design tasks that can be tackled with the software. This versatility can be realized with various types of programmable elements in VirtualLab Fusion, from source to detectors, through components, and many more. Here we demonstrate two examples: a customized analyzer and a module. In the first example, a programmable grating analyzer is used to read and display specific grating diffraction properties for further analysis; the second example shows how to control an IFTA design via a customized module, avoiding the graphical user interface of the software.

We would like to provide full flexibility in VirtualLab Fusion so as to be able to meet the specific needs of the wide range of modeling or design tasks that can be tackled with the software. This versatility can be realized with various types of programmable elements in VirtualLab, from source to detectors, through components, and many more.
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VirtualLab Fusion Training Courses in Autumn | Jena, Germany

[August 20, 2019]
Learn from our optical engineering experts how to use VirtualLab Fusion efficiently. Register for both courses or only one, depending on your previous experience working with VirtualLab Fusion.
[August 20, 2019]

Learn from our optical engineering experts how to use VirtualLab Fusion efficiently. Register for both courses or only one, depending on your previous experience working with VirtualLab Fusion.

Learn from our optical engineering experts how to use VirtualLab Fusion efficiently. Register for both courses or only one, depending on your previous experience working with VirtualLab Fusion.

Since numerous new features are included in our VirtualLab Fusion Summer Release 2019, these courses would be interesting for existing users as well.

Learn from our optical engineering experts how to use VirtualLab Fusion efficiently. Register for both courses or only one, depending on your previous experience working with VirtualLab Fusion.
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Hybrid Lens Simulation

[August 09, 2019]
We analyze in particular how to exploit the dispersion property of diffractive optics to correct chromatic aberration. Since the Summer Release 2019, VirtualLab Fusion supports the import of Binary 2 surfaces from Zemax OpticStudio®, a feature that facilitates a convenient workflow for the analysis of such hybrid lens systems.
[August 09, 2019]

We analyze in particular how to exploit the dispersion property of diffractive optics to correct chromatic aberration. Since the Summer Release 2019, VirtualLab Fusion supports the import of Binary 2 surfaces from Zemax OpticStudio®, a feature that facilitates a convenient workflow for the analysis of such hybrid lens systems.

Hybrid optical lenses with both refractive and diffractive surfaces have already proved useful in many applications. As an example, we showcase a hybrid eyepiece with just such a construction, i.e. it consists of both refractive and diffractive surfaces. We analyze in particular how to exploit the dispersion property of diffractive optics to correct chromatic aberration. Since the Summer Release 2019, VirtualLab Fusion supports the import of Binary 2 surfaces from Zemax OpticStudio®, a feature that facilitates a convenient workflow for the analysis of such hybrid lens systems.

We analyze in particular how to exploit the dispersion property of diffractive optics to correct chromatic aberration. Since the Summer Release 2019, VirtualLab Fusion supports the import of Binary 2 surfaces from Zemax OpticStudio®, a feature that facilitates a convenient workflow for the analysis of such hybrid lens systems.
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