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Alignment locking to suspended Fabry-Perot cavity |
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| Authors: | |
| Institution: | (1) Department of Physics, University of Western Australia, 35 Stirling Highway, Crawley, 6009, WA, Australia;(2) LIGO Project, California Institute of Technology, Pasadena, CA 91125, USA;(3) Centre for Gravitational Physics, Faculty of Science, The Australian National University, Canberra, 0200, Australia |
| Abstract: | In this paper we report on the alignment locking of an in vacuum 77 m long suspended mirror Fabry-Perot cavity. Lock was achieved by mode-matching a 500 mW Nd:YAG NPRO onto a pre-mode cleaner, the output of which was then mode-matched to the suspended cavity. The longitudinal locking was achieved by feeding back to the laser frequency actuator to follow the cavity resonance. Subsequent implementation of a hybrid auto-alignment system enhanced the stability of the circulating power inside the cavity. Preliminary results are presented. |
| Keywords: | Interferometer Auto-alignment Suspension Laser frequency Fabry-Perot |
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