2019/07/09 by V. Hizhnyakov, Hizhnyakov, V.
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Optics (physics.optics) #Quantum Physics (quant-ph) #Quantum optics and atomic interactions #Semiconductor Lasers and Optical Devices #cond-mat.mtrl-sci #physics.optics #quant-ph
paper · pdf · doi:10.48550/arxiv.1907.04321
arxiv created 2019/07/09 · openalex publication_date 2019/07/09 · arxiv updated 2019/07/11 · openalex created_date 2019/07/23 · openalex updated_date 2026/07/28
A nonlinear quantum-optical process is considered: emission of photon pairs by the reflecting end of a fiber excited by a standing laser wave. Radiation occurs due to periodic changes in the optical length of the fiber over time. This radiation can be significantly enhanced in long fibers. Because of this enhancement, a nonperturbative description of the process is required. Such a description presented here predicts a strong peak of radiation, if the amplitude of the oscillations of the optical length coincides with half of the laser wavelength. The considered phenomenon can be used to create a source of entangled photons.