Microlenses for astrophotonic instruments manufactured by ultrafast-laser assisted etching

Calum A. Ross; David Lee; Isabelle Guinouard; Robert R. Thomson

doi:10.1117/12.2561481

13 December 2020 Microlenses for astrophotonic instruments manufactured by ultrafast-laser assisted etching

Calum A. Ross, David Lee, Isabelle Guinouard, Robert R. Thomson

Proceedings Volume 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV; 114510P (2020) https://doi.org/10.1117/12.2561481
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The performance of astrophotonic instruments is determined by various factors including the quality of optical surfaces and the precise alignment of components. As instruments become more complex and compact, the manufacture and assembly of components is increasingly challenging. We propose that a laser-based glass microfabrication technique known as ultrafast-laser assisted etching (ULAE) is ideally suited to the manufacture of both existing and novel components for astrophotonic instruments. To demonstrate this potential, we will present ULAE manufactured microlenses with integrated passive alignment features for efficient optical fiber coupling. A full physical and optical characterization of the micro-lenses is given. These components have applications in fiber-fed multi-object spectrographs.

Conference Presentation

Citation Download Citation

Calum A. Ross, David Lee, Isabelle Guinouard, and Robert R. Thomson "Microlenses for astrophotonic instruments manufactured by ultrafast-laser assisted etching", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 114510P (13 December 2020); https://doi.org/10.1117/12.2561481

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