#fotonik noise

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Foto dal set di PAYSAGE MELODIQUE AVEC ARTAUD  la Track di NicoNote sul lato B di CHAOS VARIATIONS V by NicoNote & Obsolete Capitalism Sound System, in uscita prossimamente per Rizosfera / Rough Trade. Shooting location tks to Dani L Marzi.  Il Chaos Film è del regista italo-libanese Alì Beidoun 🔥

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Minimizing laser phase noise with machine learning

Ultra-precise lasers can be used for optical atomic clocks, quantum computers, power cable monitoring, and much more. But all lasers make noise, which researchers from DTU Fotonik want to minimize using machine learning.

The perfect laser does not exist. There will always be a bit of phase noise because the laser light frequency moves back and forth a little. Phase noise prevents the laser from producing light waves with the perfect steadiness that is otherwise a characteristic feature of the laser.

Most of the lasers we use on a daily basis do not need to be completely precise. For example, it is of no importance whether the frequency of the red laser light in the supermarket barcode scanners varies slightly when reading the barcodes. But for certain applications—for example in optical atomic clocks and optical measuring instruments—it is absolutely crucial that the laser is stable so that the light frequency does not vary.

One way of getting closer to an ultra-precise laser is if you can determine the phase noise. This may enable you to find a way of compensating for it, so that the result becomes a purer and more accurate laser beam.

Read more.

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PhD scholarship in Noise Characterization of Lasers and Frequency Combs using Machine Learning

PhD scholarship in Noise Characterization of Lasers and Frequency Combs using Machine Learning

Applications are invited for a 3-year PhD position funded by the Silicon Photonics for Optical Communications (SPOC) centre of excellence at DTU Fotonik. The centre was established in 2015 and is funded by the Danish National Research Foundation. The goal of the SPOC centre is to advance the state-of-the-art in ultra-high capacity optical communications and this PhD project will be at the heart…

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Better Characterization of Ultra-Thin Materials

We take it for granted that a new smartphone or tablet is faster than its obsolete predecessor. It has more memory, is thinner, and its touch screen is crystal-clear with a fast response rate. In a few years it may even be flexible, allowing you to roll it up and put it in your pocket.

We expect that renewable energy from solar and wind power will become increasingly efficient and profitable, and that electric cars and trains will play a major role in a future sustainable society and for our environment.

The semiconductor industry is one of the driving forces behind this development. It provides the processing power for handling the astronomical data volumes produced, and delivers efficient components for high-power electronics.

The new Innovation Fund project TRIM has a total budget of EUR 3.7 million (DKK 27 million) and is subsidized by Innovation Fund Denmark with EUR 2.6 million (DKK 19 million).

The aim is to develop optical technology based on terahertz radiation, which can measure the quality of electric and magnetic materials for the semiconductor industry. This ensures high-quality and homogeneous materials.

“Some of the key words for the continued development of a sustainable information society is increased speed, greater storage capacity and higher reliability. All of these require control and quality assurance. Terahertz technology has been the focus of research around the world for many years—now the time has come to bring a huge basic research investment into the real world and prove the value of the technology,” says Peter Uhd Jepsen, Professor, DTU Fotonik, who will be heading the project for the next three years.

The technology offers unique opportunities for completely contactless measurements—a property in high demand by industry, and an essential requirement for the characterization of e.g. 2D materials consisting of one or only a few layers of atoms.

The development of the TRIM technology takes place in close collaboration between DTU and the companies Capres A/S, Topsil GlobalWafers A/S, and NKT Photonics A/S.

The project links the world’s leading competences within terahertz and laser technology, silicon fabrication, and semiconductor materials characterization. It introduces completely new technology and methodology into a conservative and notoriously cautious industry.

“Denmark has a strong position within characterization of materials for the semiconductor industry, but there is still some way to go before we can roll out our laboratory experience to industry. The investment from Innovation Fund Denmark will help us overcome the technological and commercial barriers, which are completely natural, but must be broken down to ensure acceptance of new technologies and methods,” says Peter Uhd Jepsen.

Three of Denmark’s leading companies within semiconductors participate in the project and see great opportunities in getting direct access to world-leading research within this area:

“Capres A/S expects the TRIM project to lead to a significant expansion of the market potential for sales of advanced and fully automated machines to both current and new semiconductor industry customers. For Capres A/S, this will entail that the current unique multi-pin nanoprobe and microprobe-based measuring technique, combined with the new contactless optical measurements, extends the scope and measuring speed within materials characterization, process optimization, and process control,” says Peter Folmer Nielsen, CTO and co-founder, Capres A/S.

“NKT Photonics A/S has achieved great success since its founding by being at the forefront where technology is created. The TRIM project is a prime example of a technology under development with the potential to strengthen Danish high-tech industry as a key supplier to the huge semiconductor industry. The role of NKT Photonics A/S in TRIM is to develop and supply laser systems for the project. The project has extremely high phase noise requirements for the laser systems—an area where we are the market leaders,” says Peter Moselund, Principal Research Scientist, NKT Photonics A/S.

“For Topsil GlobalWafers A/S, this project will result in improved process control and more precise product characterization. Through improved process control and the resulting increased productivity, Topsil will—also in future—be able to compete against low-wage country production,” says Sune Bridge Duun, Development Manager, Topsil GlobalWafers A/S.

New post published on: https://www.livescience.tech/2018/12/26/better-characterization-of-ultra-thin-materials/

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Oggi giornata di sole e luce meravigliosa, riprese e shooting, il focus su due nuovi brani firmati NicoNote per Chaos Variations V,  progetto a cura di Obsolete Capitalism/Rizosfera NuKfM distribuito da Rough Trade. Qui sul set di "Axtral Requiem" per Chaos Film V,  insieme a Alì Beidoun, Paolo Davoli, Letizia Rustichelli.

Perfect day! Tks💋

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PhD scholarship in Noise in Waveguides for Signal Processing

PhD scholarship in Noise in Waveguides for Signal Processing

DTU Fotonik works with all areas of photonic engineering, including a strong focus on optical communications. We are now seeking a PhD student to do research within theory and characterization of noise in optical signal processing using integrated photonic circuitry. The Research will be carried out within the centre of excellence: “Silicon Photonics for Optical Communications,” (SPOC) funded by…