2014/03/05 by K. Somiya, Y. Kataoka, J. Kato +2 · 27 citations
Physics and Astronomy · #Bar (unit) #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Detector #Gravitational-wave observatory #Laser #Mechanical and Optical Resonators #Optical amplifier #Optical cavity #Optical parametric amplifier #Optics #Parametric statistics #Physics #Pulsars and Gravitational Waves Research #Realization (probability) #SIGNAL (programming language) #gr-qc #physics.optics #quant-ph
paper · pdf · doi:10.1016/j.physleta.2015.11.010
published in Physics Letters A 380(4), 521-524 (Elsevier BV) · 4 pages, 5 figures
arxiv created 2014/03/05 · openalex publication_date 2015/11/17 · arxiv updated 2020/07/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
An optical cavity consisting of optically trapped mirrors makes a resonant bar that can be stiffer than diamond. A limitation of the stiffness arises in the length of the optical bar as a consequence of the finite light speed. High laser power and light mass mirrors are essential for realization of a long and stiff optical bar that can be useful for example in the gravitational-wave detector aiming at the observation of a signal from neutron-star collisions, supernovae, etc. In this letter, we introduce a parametric signal amplification scheme that realizes the long and stiff optical bar without the need to increase the laser power.