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[Thin Films] – A History of Thin Films in Optics 25 octobre 2020

Thin-film optics is the branch of optics that focuses on thin, structured layers of different materials. These layers range from a fraction of a nanometer up to several micrometers thick but are usually in the order of the wavelengths of ultraviolet light, which is about 500nm. Their synthesis is controlled via deposition, with one or more layers of material layered onto the substrate, usually via physical vapor deposition.

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[Optic] – Lasers etch a ‘perfect’ solar energy absorber 23 février 2020

The University of Rochester research lab that recently used lasers to create unsinkable metallic structures has now demonstrated how the same technology could be used to create highly efficient solar power generators.

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[Optics] – EPFL develops high-precision laser 3D printing method 23 février 2020

Researchers at EPFL, Lausanne, Switzerland, have developed a new, high-precision method for 3D-printing small, soft objects. The process, which takes less than 30 seconds from start to finish, has potential applications in a wide range of fields, including 3D bioprinting.

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[Optics] – Shaping waveforms 22 février 2020

Chemical reactions are determined at their most fundamental level by their respective electronic structure and dynamics. Steered by a stimulus such as light irradiation, electrons rearrange themselves in liquids or solids. This process takes only a few hundred attoseconds, whereby one attosecond is the billionth part of a billionth of a second.

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[Optics] – A fast light detector made of 2D materials 22 février 2020

Two research groups at ETH Zurich have joined forces to develop a novel light detector. It consists of two-dimensional layers of different materials that are coupled to a silicon optical waveguide. In the future, this approach can also be used to make LEDs and optical modulators.

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[Optic] – Ultrafast switching of an optical bit 22 février 2020

Computers process information based on arrays of so-called bits. Each bit can take the values of one or zero. This is typically realized with integrated electronic circuits permanently written onto a semiconductor chip.

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[Optics] – Flat lens gets ahead of the optical curve 21 février 2020

The word « lens » takes its name from the Latin word for lentil. Both are both hemispheric shapes bound together on their flat surface. So a « flat lens » sounds like a contradiction of terms. Yet that is exactly what Andrei Faraon is working on at California Institute of Technology’s Nanoscale and Quantum Optics Lab.

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[Optic] – Light in Sight: Micro-Lenses Enhance the Functionality of Future Cars 26 novembre 2019

Technological advancements have led to incredible break throughs in the automotive industry, such as self-driving and environmentally compliant vehicles. Now, a new development from EDL Rethschulte, which specializes in lighting design, has the potential to change the view of and from the car through a novel micro-lens array (MLA) wafer technology, which allows for the production of extremely compact and light LED projectors the size of a thimble.

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[Optic] – Powering future optical microsystems with chip-scale integrated photonics 26 novembre 2019

Lasers are essential to many fields – ranging from optical communications and remote sensing, to manufacturing and medicine. While the semiconductor laser was first demonstrated nearly 60 years ago, advances in diode lasers and access to semiconductor fabrication techniques have enabled continued innovation and miniaturization of the technology.

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