کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1858988 | 1037197 | 2016 | 4 صفحه PDF | دانلود رایگان |
• A stiff optical spring bar is a way to detect gravitational waves at high frequencies.
• A parametric amplification technique realizes the stiff optical bar without increasing the circulating laser power.
• This letter introduces our theoretical work on a new interferometric configuration with the parametric amplifier.
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 with a non-linear crystal inside the signal-recycling cavity.
Journal: Physics Letters A - Volume 380, Issue 4, 5 February 2016, Pages 521–524