High-Q (>750,000) photonic crystal nanocavities fabricated from chalcogenide glass fully embedded in an index matched cladding

Xin Gai; Barry Luther-Davies; Thomas P. White

doi:10.1117/12.921526

25 April 2012 High-Q (>750,000) photonic crystal nanocavities fabricated from chalcogenide glass fully embedded in an index-matched cladding

Xin Gai, Barry Luther-Davies, Thomas P. White

Author Affiliations +

Proceedings Volume 8425, Photonic Crystal Materials and Devices X; 842516 (2012) https://doi.org/10.1117/12.921526
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

We have fabricated a Ge_11.5As₂₄Se_64.5 2-D photonic crystal containing a hetero-structure cavity fully embedded in a cladding with index of 1.44. Because of the low index contrast of this structure (≈1.2) we had to use a W0.54 defect waveguide to inhibit losses to continuum modes above the light line. By has allowed optical cavities with very high Q (>750,000) to be obtained.

Citation Download Citation

Xin Gai, Barry Luther-Davies, and Thomas P. White "High-Q (>750,000) photonic crystal nanocavities fabricated from chalcogenide glass fully embedded in an index-matched cladding", Proc. SPIE 8425, Photonic Crystal Materials and Devices X, 842516 (25 April 2012); https://doi.org/10.1117/12.921526

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