Author Archives: achermann

New design for opto-mechanical components

As part of a semester project, Beat Fleischlin from mechanical engineering, successfully developed a new design for opto-mechanical components that can be used on an optical rail system. The mechanical components were designed such that they allow easy alignment of … Continue reading

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Bending Laser Beams

Can a light beam be bent? Einstein said that light is affected by gravity and bent in the proximity of a large mass (general theory of relativity). Well, that’s not an effect that one can easily observe in everyday life. … Continue reading

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Congratulations Marc Labudde!

Marc Labudde successfully defended his bachelor thesis. Congratualtions! Marc developed a stabilized laser driver that will be used in a diode-pumped solid state laser (DPSS laser). The laser driver controls the current and temperature of a InGaN laser diode that … Continue reading

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Upconverting Dye-Doped Polymer Nanoparticles

Last year, I was working on a project with Yoan Simon from the group of Christoph Weder at the Adolphe Merkle Institute. This research institute is located in Fribourg, which is in the French speaking part of Switzerland. At the … Continue reading

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Radioactive Waste

The lecture topic was nuclear energy, radioactivity, and radioactive waste. The interesting outcome of a student discussion: Government should decide for a deep final repository for high level radioactive waste based on geological/scientific reasons and then carry it through. Since … Continue reading

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Last Swim?

It might have been my last swim in the Vierwaldst├Ąttersee for the season. The water was great – maybe a little nippy. My usual half km swim was doable but a hot shower a must. With a cold front in … Continue reading

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