High Q factor chalcogenide ring resonators for cavity-enhanced MIR spectroscopic sensing
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Ma, Pan; Choi, Duk-Yong; Yu, Yi; Yang, Zhiyong; Vu, Khu; Nguyen, Thach; Mitchell, A.; Luther-Davies, Barry; Madden, Steve
Description
We report the characteristics of high Q factor chalcogenide ring resonators designed for sensing in the mid-infrared (MIR). The resonators consisted of an exposed Ge11.5As24Se64.5core on a Ge11.5As24S64.5 bottom cladding and were fabricated in the racetrack coupled ring structure. Loaded Q factors at 5.2μm up to 58,000were obtained, corresponding to an intrinsic Q of 145,000 and a waveguide propagation loss of 0.84dB/cm.
| Collections | ANU Research Publications |
|---|---|
| Date published: | 2015 |
| Type: | Journal article |
| URI: | http://hdl.handle.net/1885/103924 |
| Source: | Optics Express |
| DOI: | 10.1364/OE.23.019969 |
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| File | Description | Size | Format | Image |
|---|---|---|---|---|
| 01_Ma_High_Q_factor_chalcogenide_2015.pdf | 288.05 kB | Adobe PDF | ||
| 02_Ma_High_Q_factor_chalcogenide_2015.pdf | 1.06 MB | Adobe PDF |
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