高级激光干涉引力波天文台自适应光学概述。

Overview of Advanced LIGO adaptive optics.

作者信息

Brooks Aidan F, Abbott Benjamin, Arain Muzammil A, Ciani Giacomo, Cole Ayodele, Grabeel Greg, Gustafson Eric, Guido Chris, Heintze Matthew, Heptonstall Alastair, Jacobson Mindy, Kim Won, King Eleanor, Lynch Alexander, O'Connor Stephen, Ottaway David, Mailand Ken, Mueller Guido, Munch Jesper, Sannibale Virginio, Shao Zhenhua, Smith Michael, Veitch Peter, Vo Thomas, Vorvick Cheryl, Willems Phil

出版信息

Appl Opt. 2016 Oct 10;55(29):8256-8265. doi: 10.1364/AO.55.008256.

DOI:10.1364/AO.55.008256

PMID:27828071

Abstract

This is an overview of the adaptive optics used in Advanced LIGO (aLIGO), known as the thermal compensation system (TCS). The TCS was designed to minimize thermally induced spatial distortions in the interferometer optical modes and to provide some correction for static curvature errors in the core optics of aLIGO. The TCS is comprised of ring heater actuators, spatially tunable CO laser projectors, and Hartmann wavefront sensors. The system meets the requirements of correcting for nominal distortion in aLIGO to a maximum residual error of 5.4 nm rms, weighted across the laser beam, for up to 125 W of laser input power into the interferometer.

摘要

这是对高级激光干涉引力波天文台（aLIGO）中使用的自适应光学系统的概述，该系统称为热补偿系统（TCS）。TCS旨在将干涉仪光学模式中热诱导的空间畸变降至最低，并对aLIGO核心光学元件中的静态曲率误差进行一些校正。TCS由环形加热器致动器、空间可调谐CO激光投影仪和哈特曼波前传感器组成。该系统满足将aLIGO中的标称畸变校正到均方根（rms）最大残余误差为5.4 nm的要求，该误差在激光束上加权，对于输入到干涉仪中的高达125 W的激光功率均适用。