Journal
IEEE SENSORS JOURNAL
Volume 13, Issue 8, Pages 3098-3105Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2013.2260327
Keywords
Diode lasers; Laser sensors; Optoelectronic and photonic sensors; Gas detectors
Funding
- National Science Foundation [0901388]
- Department of Energy through Lawrence Livermore National Lab under PECASE Award [B589070]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0901388] Funding Source: National Science Foundation
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Simulation results and experimental measurements are presented for ridge waveguide edge-emitting lasers with a palladium thin film integrated for hydrogen gas detection. The palladium film experiences a refractive index change when in contact with hydrogen, causing a shift in the laser's output power and wavelength. It is found that the sensitivity of the device can be controlled by altering the width of the ridge waveguide, and the response time can be controlled by regulating the operating temperature of the device.
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