Femtosecond Laser-Micromachining of Glass Micro-Chip for High Order Harmonic Generation in Gases.
| Autor: | Ciriolo AG; Institute for Photonics and Nanotechnologies, National Research Council, 20133 Milan, Italy., Vázquez RM; Institute for Photonics and Nanotechnologies, National Research Council, 20133 Milan, Italy., Roversi A; Department of Physics, Politecnico di Milano, 20133 Milan, Italy., Frezzotti A; Department of Aerospace Science and Technology, Politecnico di Milano, 20156 Milan, Italy., Vozzi C; Institute for Photonics and Nanotechnologies, National Research Council, 20133 Milan, Italy., Osellame R; Institute for Photonics and Nanotechnologies, National Research Council, 20133 Milan, Italy.; Department of Physics, Politecnico di Milano, 20133 Milan, Italy., Stagira S; Institute for Photonics and Nanotechnologies, National Research Council, 20133 Milan, Italy.; Department of Physics, Politecnico di Milano, 20133 Milan, Italy. |
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| Jazyk: | angličtina |
| Zdroj: | Micromachines [Micromachines (Basel)] 2020 Feb 04; Vol. 11 (2). Date of Electronic Publication: 2020 Feb 04. |
| DOI: | 10.3390/mi11020165 |
| Abstrakt: | We report on the application of femtosecond laser micromachining to the fabrication of complex glass microdevices, for high-order harmonic generation in gas. The three-dimensional capabilities and extreme flexibility of femtosecond laser micromachining allow us to achieve accurate control of gas density inside the micrometer interaction channel. This device gives a considerable increase in harmonics' generation efficiency if compared with traditional harmonic generation in gas jets. We propose different chip geometries that allow the control of the gas density and driving field intensity inside the interaction channel to achieve quasi phase-matching conditions in the harmonic generation process. We believe that these glass micro-devices will pave the way to future downscaling of high-order harmonic generation beamlines. Competing Interests: The authors declare no conflict of interest. |
| Databáze: | MEDLINE |
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