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Your search keyword '"Bewley, William W."' showing total 104 results
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104 results on '"Bewley, William W."'

101. Quantum cascade laser on silicon at 4.8 μm.

Author

Spott, Alexander, Peters, Jon, Davenport, Michael L., Stanton, Eric J., Merritt, Charles D., Bewley, William W., Vurgaftman, Igor, Meyer, Jerry R., Kirch, Jeremy, Mawst, Luke J., Botez, Dan, and Bowers, John E.

Published
2016

102. Distributed feedback quantum cascade lasers on silicon.

Author

Spott, Alexander, Peters, Jon, Davenport, Michael L., Stanton, Eric J., Zhang, Chong, Bewley, William W., Merritt, Charles D., Vurgaftman, Igor, Kim, Chul Soo, Meyer, Jerry R., Kirch, Jeremy, Mawst, Luke J., Botez, Dan, and Bowers, John E.

Published
2016

104. Methane detection using an interband-cascade LED coupled to a hollow-core fiber.

Author

Li N, Tao L, Yi H, Kim CS, Kim M, Canedy CL, Merritt CD, Bewley WW, Vurgaftman I, Meyer JR, and Zondlo MA

Abstract

Midwave infrared interband-cascade light-emitting devices (ICLEDs) have the potential to improve the selectivity, stability, and sensitivity of low-cost gas sensors. We demonstrate a broadband direct absorption CH 4 sensor with an ICLED coupled to a plastic hollow-core fiber (1 m length, 1500 µm inner diameter). The sensor achieves a 1σ noise equivalent absorption of approximately 0.2 ppmv CH 4 at 1 Hz, while operating at a low drive power of 0.5 mW. A low-cost sub-ppmv CH 4 sensor would make monitoring emissions more affordable and more accessible for many relevant industries, such as the petroleum, agriculture, and waste industries.

Published
2021
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