Higher-order Laguerre-Gauss interferometry for gravitational-wave detectors with in situ mirror defects compensation

被引：19

作者：

Allocca, A. ^{[1
,2
]}

Gatto, A. ^{[3
]}

Tacca, M. ^{[3
]}

Day, R. A. ^{[4
]}

Barsuglia, M. ^{[3
]}

Pillant, G. ^{[4
]}

Buy, C. ^{[3
]}

Vajente, G. ^{[5
]}

机构：

[1] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[2] Univ Siena, I-53100 Siena, Italy

[3] Univ Paris Diderot, Sorbonne Paris Cite, Observ Paris, APC,CNRS,IN2P3,CEA,Irfu, F-75205 Paris 13, France

[4] EGO, I-56021 Pisa, Italy

[5] CALTECH, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW D | 2015年 / 92卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.92.102002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The use of higher-order Laguerre-Gauss modes has been proposed to decrease the influence of thermal noise in future generation gravitational-wave interferometric detectors. The main obstacle for their implementation is the degeneracy of modes with same order, which highly increases the requirements on the mirror defects, beyond the state-of-the-art polishing and coating techniques. In order to increase the mirror surface quality, it is also possible to act in situ, using a thermal source, sent on the mirrors after a proper shaping. In this paper we present the results obtained on a tabletop Fabry-Perot Michelson interferometer illuminated with a LG(3,3) mode. We show how an incoherent light source can reduce the astigmatism of one of the mirrors, increasing the quality of the beam in one of the Fabry-Perot cavities and then the contrast of the interferometer. The system has the potential to reduce more complex defects and also to be used in future gravitational-wave detectors using conventional Gaussian beams.

引用

页数：9

共 32 条

[31] Adaptive optics sensing and control technique to optimize the resonance of the Laguerre-Gauss 33 mode in Fabry-Perot cavities [J].

Vajente, G. ;

Day, R. A. .

PHYSICAL REVIEW D, 2013, 87 (12)

[32] On Special Optical Modes and Thermal Issues in Advanced Gravitational Wave Interferometric Detectors [J].

Vinet, Jean-Yves .

LIVING REVIEWS IN RELATIVITY, 2009, 12

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