Millo Jacques, Merzougui Mourad, Di Pace Sibilla, Chaibi Walid
Appl Opt. 2014 Nov 10;53(32):7761-72. doi: 10.1364/AO.53.007761.
In this paper, we present a high bandwidth frequency lock of a rigid tunable Fabry Perot cavity based on a set of lead zirconate titanate (PZT) actuators. The cavity spacer was specifically designed such that the frequency of the first resonance of the whole assembly under PZT excitation is above 35 kHz, thus allowing a servo-loop bandwidth of 13 kHz. It is demonstrated that no significant noise is added by the cavity to the output beam with respect to the input beam over the servo-loop bandwidth. This cavity can be used as a pre-mode cleaner in interferometric gravitational wave detectors such as the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo.
在本文中，我们展示了一种基于一组锆钛酸铅（PZT）致动器的刚性可调谐法布里 - 珀罗腔的高带宽频率锁定。腔间隔器经过特殊设计，使得在PZT激励下整个组件的一阶共振频率高于35kHz，从而实现13kHz的伺服环带宽。结果表明，在伺服环带宽范围内，相对于输入光束，该腔不会给输出光束增加明显的噪声。这种腔可作为干涉式引力波探测器（如激光干涉引力波天文台（LIGO）和处女座干涉仪（Virgo））中的预模式清洁器。
