Impact of Earth's gravity on Gaussian beam propagation in hemispherical cavities
| Autor: | Sebastian Ulbricht, R. A. Müller, Andrey Surzhykov, Johannes Dickmann, Stefanie Kroker |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Field (physics) business.industry FOS: Physical sciences Physics::Optics General Relativity and Quantum Cosmology (gr-qc) Laser Symmetry (physics) General Relativity and Quantum Cosmology law.invention Gravitation Optics Gravitational field law Optical cavity Physics::Accelerator Physics 83-10 83B05 78-10 business Beam (structure) Gaussian beam |
| Popis: | We theoretically investigate the influence of gravity on laser light in a hemispherical optical cavity, operating on Earth. The propagation of light in such a cavity is modeled by a Gaussian beam, affected by the Earth's gravitational field. On laboratory scale, this field is described by the spacetime of homogeneous gravity, known as Rindler spacetime. In that spacetime, the beam is bent downwards and acquires a height dependent phase shift. As a consequence the phase fronts of the laser light differ from those of a usual Gaussian beam. Assuming that the initial beam enters the cavity along its symmetry axis, these gravitational effects cause variations of the beam phase with every cavity round trip. Detailed calculations are performed to investigate how these phase variations depend on the beam parameters and the cavity setup. Moreover, we discuss the implications of our findings for cavity calibration techniques and cavity-based laser stabilization procedures. 10 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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