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Photonic ring resonator notch filters for astronomical OH suppression
Author(s): S. Kuhlmann; P. Liu; S. C. Ellis; K. Kuehn; H. Spinka; D. Underwood; L. Ocola; R. R. Gupta; N. P. Stern
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Paper Abstract

Photonic ring resonators used as wavelength notch filters are a promising novel solution to enable astronomical instruments to remove the signal from atmospheric OH emission in the near-infrared wavelength range. We derive design requirements from theory and finite difference time domain simulations. We find rings with radii less than 10 microns provide an adequate free spectral range for silicon nitride abd less than 3 microns for silicon. One challenge for this application is the requirement for many rings in series to suppress particular wavelengths within 0.2nm. We report progress in fabricating both silicon and silicon nitride rings for OH suppression.

Paper Details

Date Published: 2 January 2018
PDF: 6 pages
Proc. SPIE 10456, Nanophotonics Australasia 2017, 104564B (2 January 2018); doi: 10.1117/12.2283353
Show Author Affiliations
S. Kuhlmann, Argonne National Lab. (United States)
P. Liu, Northwestern Univ. (United States)
S. C. Ellis, Australian Astronomical Observatory (Australia)
Univ. of Sydney (Australia)
K. Kuehn, Australian Astronomical Observatory (Australia)
H. Spinka, Argonne National Lab. (United States)
D. Underwood, Argonne National Lab. (United States)
L. Ocola, Argonne National Lab. (United States)
R. R. Gupta, Argonne National Lab. (United States)
Lawrence Berkeley National Lab. (United States)
N. P. Stern, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 10456:
Nanophotonics Australasia 2017
James W. M. Chon; Baohua Jia, Editor(s)

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