Offentlig upphandling av Stockholms universitet Pabliq

Rapportkommentarer Direkt: Bio-Works: 2019-08-26 by Direkt

A developed method of fringe free spectral phase interferometry reconstruction (FF-SPIDER) for femtosecond pulse measurement is demonstrated with theoretical simulation and … Scientists have now studied two such animals, the diving bell spider and fire ant, in order to learn these secrets and potentially use them to build unsinkable ships and emergency floatation devices. The purpose of this project is to prove the macroscopic structural model of spider's dragline by observing the spider silk using a home-made femtosecond laser second harmonic generation (SHG 2020-09-10 Abstract. In this contribution some basic properties of femtosecond laser pulses are summarized. In Sect. 12.1 we start with the linear properties of ultrashort light pulses. Nonlinear optical effects that would alter the frequency spectrum of an ultrashort pulse are not considered. The YFOA femtosecond fiber laser is designed for stable generation of an ultra-short laser pulse train.

Spider femtosecond

Figure 1: Spectrum of two femtosecond pulses, where one pulse is nonlinearly chirped and delayed by 600 fs. The spectral modulation can be used to reconstruct the spectral phase of the chirped pulse. A high sensitivity can be achieved, as such a heterodyne method works well even if the signal pulse energy is much lower than that of the reference pulse. VICTUS® Femtosecond Laser Platform - Full Vision & Versatility With thirty years of experience in the ophthalmic laser surgery field, the 3rd Generation VICTUS ® Femtosecond Laser Platform combines our expertise in surgeon and patient needs with German engineering and intuitive design.

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Advances in femtosecond methods are crucial to the understanding of ultrafast phenomena in nature. Photodissociation and femtosecond probing. Photodissociation is a chemical reaction in which a chemical compound is broken down by photons. It is defined as the interaction of one or more photons with one target molecule.

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was founded in 2016 to commercialize a cutting-edge all-fiber femtosecond technology developed in Polish academic institutions.

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The spectral modulation can be used to reconstruct the spectral phase of the chirped pulse.
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In this paper, using an in-house nonscanning type femtosecond pulse laser second harmonic generation microscope, we characterized the behavior of the β-sheet of spider silk under an applied external force. The orientation of the β-sheets was more unidirectional when the silk was extended.

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A high sensitivity can be achieved, as such a heterodyne method works well even if the signal pulse energy is much lower than that of the reference pulse. 2020-02-27 Femtosecond pulse-measurement methods have helped ultrashort pulses to achieve a wide range of applications and to enter even shorter temporal regimes.

The purpose of this project is to prove the macroscopic structural model of spider's dragline by observing the spider silk using a home-made femtosecond laser second harmonic generation (SHG 2020-09-10 Abstract. In this contribution some basic properties of femtosecond laser pulses are summarized. In Sect. 12.1 we start with the linear properties of ultrashort light pulses. Nonlinear optical effects that would alter the frequency spectrum of an ultrashort pulse are not considered.