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A Novel Arm-Length Stabilization Scheme for Gravitational-Wave Detectors with AlGaAs/GaAs Coated Mirrors
Jian Liu, Juntao Pan, Carl Blair +7
The arm length stabilisation system is employed in gravitational-wave detectors to reduce the velocity of the mirrors such that the arm cavities can be brought onto resonance in a…
Single and coupled cavity mode sensing schemes using a diagnostic field
Aaron W. Goodwin-Jones, Haochen Zhu, Carl Blair +4
Precise optical mode matching is of critical importance in experiments using squeezed-vacuum states. Automatic spatial-mode matching schemes have the potential to reduce losses and…
Demonstration of Parametric Instability suppression through optical feedback
Vladimir Bossilkov, Jian Liu, Carl Blair +2
We demonstrate the suppression of parametric instability using through optical actuation in an electro-optical feedback loop, stabilising the high order optical mode content in an…
Gravitational wave detectors with broadband high frequency sensitivity
Michael A. Page, Maxim Goryachev, Haixing Miao +10
The binary neutron star coalescence GW170817 was observed by gravitational wave detectors during the inspiral phase but sensitivity in the 1-5 kHz band was insufficient to observe…
Towards thermal noise free optomechanics
Michael Page, Yiqiu Ma, Chunnong Zhao +6
Thermal noise generally greatly exceeds quantum noise in optomechanical devices unless the mechanical frequency is very high or the thermodynamic temperature is very low. This pape…
Linear negative dispersion with a gain doublet via optomechanical interactions
Jiayi Qin, Chunnong Zhao, Yiqiu Ma +2
Optical cavities containing a negative dispersion medium have been proposed as a means of improving the sensitivity of laser interferometric gravitational wave (GW) detectors throu…