Increasing the spectral coverage of interferometric integrated optics: K/L and N-laser-written beam combiners

被引：4

作者：

Tepper, Jan ^{[1
]}

Diener, Romina ^{[2
]}

Labadie, Lucas ^{[1
]}

Minardi, Stefano ^{[2
,3
]}

Muthusubramanian, Balaji ^{[1
]}

Pott, Joerg-Uwe ^{[4
]}

Nolte, Stefan ^{[2
]}

Arriola, Alexander ^{[1
,5
,6
]}

Madden, Gillian ^{[7
]}

Choudhury, Debaditya ^{[7
]}

MacPherson, William N. ^{[7
]}

Thomson, Robert R. ^{[7
]}

机构：

[1] Univ Cologne, Inst Phys 1, Zulpicher Str 77, D-50937 Cologne, Germany

[2] Friedrich Schiller Univ Jena, Inst Appl Phys, Albert Einstein Str 15, D-07745 Jena, Germany

[3] Leibniz Inst Astrophys Potsdam, Sternwarte 16, D-14482 Potsdam, Germany

[4] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[5] Macquarie Univ, Ctr Ultrahigh Bandwidth Devices Opt Syst, N Ryde, NSW 2109, Australia

[6] Macquarie Univ, MQ Photon Res Ctr, N Ryde, NSW 2109, Australia

[7] Heriot Watt Univ, Edinburgh EH14 4AS, Midlothian, Scotland

来源：

OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING V | 2016年 / 9907卷

关键词：

interferometry; integrated optics; infrared; beam combination; laser writing; ASTRONOMICAL APPLICATIONS; CHALCOGENIDE GLASS; WAVE-GUIDES; INSTRUMENT; VLTI;

D O I：

10.1117/12.2231394

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Integrated optics (IO) has proven to be a competitive solution for beam combination in the context of astronomical interferometry (e.g. GRAVITY at the VLTI). However, conventional silica-based lithographic IO is limited to wavelengths shorter than 2.2 mu m. We report in this paper the progress on our attempt to extend the operation of IO to longer wavelengths. Previous work has demonstrated the suitability of chalcogenide devices in the MID-IR in the N band and monochromatically at 3.39 mu m. Here, we continue this effort with the manufacturing of new laser written GLS IO as beam combiners designed for the astronomical L band and characterized interferometrically at 3.39 mu m. In the era of multi-telescope interferometers, we present a promising solution to strengthen the potential of IO for new wavelength ranges.

引用

页数：7

共 4 条

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[3] Ultrafast laser inscription of integrated optics 2-telescope beam combiners for K-band interferometry at the CHARA array
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MacLachlan, David G.
Ross, Calum A.
Sharma, Tarun K.
Labadie, Lucas
Madhav, Kalaga
Nayak, Abani S.
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[J]. OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING VIII, 2022, 12183
[4] Fiber-connectorized ultrafast-laser-inscribed K-band integrated optics beam combiner for the CHARA telescope array
Siliprandi, Jacopo
MacLachlan, David G.
Ross, Calum A.
Sharma, Tarun K.
Labadie, Lucas
Madhav, Kalaga
Nayak, Abani S.
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Benoit, Aurelien
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