FDTD Simulation of Thermal Noise in Open Cavities

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dc.creatorAndreasen, Jonathan
dc.creatorCao, Hui
dc.creatorTaflove, Allen
dc.creatorKumar, Prem
dc.creatorCao, Chang-qi
dc.date2007-12-03
dc.date2008-01-17
dc.date.accessioned2026-07-07T13:18:21Z
dc.date.available2026-07-07T13:18:21Z
dc.descriptionA numerical model based on the finite-difference time-domain (FDTD) method is developed to simulate thermal noise in open cavities owing to output coupling. The absorbing boundary of the FDTD grid is treated as a blackbody, whose thermal radiation penetrates the cavity in the grid. The calculated amount of thermal noise in a one-dimensional dielectric cavity recovers the standard result of the quantum Langevin equation in the Markovian regime. Our FDTD simulation also demonstrates that in the non-Markovian regime the buildup of the intracavity noise field depends on the ratio of the cavity photon lifetime to the coherence time of thermal radiation. The advantage of our numerical method is that the thermal noise is introduced in the time domain without prior knowledge of cavity modes.
dc.description8 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0712.0204
dc.identifierhttp://arxiv.org/abs/0712.0204
dc.identifierPhys. Rev. A 77 (2008) 023810
dc.identifierdoi:10.1103/PhysRevA.77.023810
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/231402
dc.subjectOptics
dc.subjectGeneral Physics
dc.titleFDTD Simulation of Thermal Noise in Open Cavities
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