Mid-wave infrared narrow bandwidth guided mode resonance notch filter | Zendy

Yi Chen Zhong | Zendy; Z. Goldenfeld | Zendy; Kang-Wen Li | Zendy; W. Streyer | Zendy; Yu Lan | Zendy; Leland Nordin | Zendy; Neil R. Murphy | Zendy; Daniel Wasserman | Zendy

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Mid-wave infrared narrow bandwidth guided mode resonance notch filter

Author(s) -

Yi Chen Zhong,

Z. Goldenfeld,

Kang-Wen Li,

W. Streyer,

Yu Lan,

Leland Nordin,

Neil R. Murphy,

Daniel Wasserman

Publication year - 2017

Publication title -

optics letters

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.42.000223

Subject(s) - band stop filter , bandwidth (computing) , resonance (particle physics) , infrared , physics , mode (computer interface) , guided mode resonance , optics , acoustics , telecommunications , computer science , low pass filter , wavelength , atomic physics , diffraction grating , operating system

We have designed, fabricated, and characterized a guided mode resonance notch filter operating in the technologically vital mid-wave infrared (MWIR) region of the electromagnetic spectrum. The filter provides a bandstop at λ≈4.1 μm, with a 12 dB extinction on resonance. In addition, we demonstrate a high transmission background (>80%), less than 6% transmission on resonance, and an ultra-narrow bandwidth transmission notch (10 cm -1 ). Our filter is optically characterized using angle- and polarization-dependent Fourier transform infrared spectroscopy, and simulated using rigorous coupled-wave analysis (RCWA) with excellent agreement between simulations and our experimental results. Using our RCWA simulations, we are able to identify the optical modes associated with the transmission dips of our filter. The presented structure offers a potential route toward narrow-band laser filters in the MWIR.

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