Enabling astrophotonics adaptive optics and photonic lanterns for coupling starlight into the single-mode regime
Dissertation, Universität Potsdam, 2021
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| Sprache: | eng |
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Potsdam
2021
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Tag hinzufügen | Zusammenfassung: | Dissertation, Universität Potsdam, 2021 Ground-based astronomy is set to employ next-generation telescopes with apertures larger than 25 m in diameter before this decade is out. Such giant telescopes observe their targets through a larger patch of turbulent atmosphere, demanding that most of the instruments behind them must also grow larger to make full use of the collected stellar flux. This linear scaling in size greatly complicates the design of astronomical instrumentation, inflating their cost quadratically. Adaptive optics (AO) is one approach to circumvent this scaling law, but it can only be done to an extent before the cost of the corrective system itself overwhelms that of the instrument or even that of the telescope. One promising technique for miniaturizing the instruments and thus driving down their cost is to replace some, or all, of the free space bulk optics in the optical train with integrated photonic components. Photonic devices, however, do their work primarily in single-mode waveguides, and the atmospherically-distorted starlight must first be ... |
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| Beschreibung: | xxvii, 177 Seiten Illustrationen, Diagramme |