Waveguide grating mirror in a fully suspended 10 meter Fabry-Perot cavity

被引：10

作者：

Friedrich, Daniel ^{[1
,2
]}

Barr, Bryan W. ^{[3
]}

Brueckner, Frank ^{[4
]}

Hild, Stefan ^{[3
]}

Nelson, John ^{[3
]}

Macarthur, John ^{[3
]}

Plissi, Michael V. ^{[3
]}

Edgar, Matthew P. ^{[3
]}

Huttner, Sabina H. ^{[3
]}

Sorazu, Borja ^{[3
]}

Kroker, Stefanie ^{[4
]}

Britzger, Michael ^{[1
,2
]}

Kley, Ernst-Bernhard ^{[4
]}

Danzmann, Karsten ^{[1
,2
]}

Tuennermann, Andreas ^{[4
]}

Strain, Ken A. ^{[3
]}

Schnabel, Roman ^{[1
,2
]}

机构：

[1] Leibniz Univ Hannover, Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany

[2] Leibniz Univ Hannover, Inst Gravitat Phys, D-30167 Hannover, Germany

[3] Univ Glasgow, Sch Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland

[4] Univ Jena, Inst Angew Phys, D-07743 Jena, Germany

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 16期

基金：

英国科学技术设施理事会;

关键词：

RESONANT REFLECTORS; THERMAL NOISE; DIFFRACTION; ANOMALIES; COATINGS; LENGTH;

D O I：

10.1364/OE.19.014955

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the first demonstration of a fully suspended 10 m Fabry-Perot cavity incorporating a waveguide grating as the coupling mirror. The cavity was kept on resonance by reading out the length fluctuations via the Pound-Drever-Hall method and employing feedback to the laser frequency. From the achieved finesse of 790 the grating reflectivity was determined to exceed 99.2% at the laser wavelength of 1064 nm, which is in good agreement with rigorous simulations. Our waveguide grating design was based on tantala and fused silica and included a approximate to 20 nm thin etch stop layer made of Al2O3 that allowed us to define the grating depth accurately and preserve the waveguide thickness during the fabrication process. Demonstrating stable operation of a waveguide grating featuring high reflectivity in a suspended low-noise cavity, our work paves the way for the potential application of waveguide gratings as mirrors in high-precision interferometry, for instance in future gravitational wave observatories. (C) 2011 Optical Society of America

引用

页码：14955 / 14963

页数：9

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