Integrated echélle gratings for astrophotonics

Andreas Stoll; Yu Wang; Kalaga Madhav; Martin Roth

doi:10.1117/12.2541554

3 January 2020 Integrated echélle gratings for astrophotonics

Andreas Stoll, Yu Wang, Kalaga Madhav, Martin Roth

Proceedings Volume 11203, Advances in Optical Astronomical Instrumentation 2019; 112030Z (2020) https://doi.org/10.1117/12.2541554
Event: ANZCOP, 2019, Melbourne, Australia

Abstract

In pursuit of miniaturization of spectrograph systems, various wavelength-dispersive technologies such as arrayed waveguide gratings (AWGs) [1] and stationary-wave integrated Fourier transform spectrographs (SWIFTS) [2] have been studied as possible candidates for practical implementations of compact, lightweight integrated spectrographs. Integrated echélle-grating (EG) based wavelength demultiplexers have been proposed as an alternative to AWGs for use as the main diffractive element in such a compact spectrograph [3]. Apart from the simple Rowland mount type, more sophisticated geometries, such as the perfect chirped grating (PCG) [4] and two-stigmatic-point gratings (SEG) [5] exist. In this work, we present the first planar integrated echélle grating based on SEG geometry and specifically designed for astronomical spectroscopy in the NIR range ~1500 nm to 1600 nm.

Citation Download Citation

Andreas Stoll, Yu Wang, Kalaga Madhav, and Martin Roth "Integrated echélle gratings for astrophotonics", Proc. SPIE 11203, Advances in Optical Astronomical Instrumentation 2019, 112030Z (3 January 2020); https://doi.org/10.1117/12.2541554

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