TY - GEN
T1 - Pd coated edge-emitting lasers for hydrogen sensing applications
AU - Griffin, Benjamin G.
AU - Chang, Chia Lun
AU - Arbabi, Amir
AU - Goddard, Lynford L.
PY - 2010
Y1 - 2010
N2 - A novel type of hydrogen (H2) sensor utilizing a thin film of palladium (Pd) deposited on the ridge of an edge-emitting laser has been designed, fabricated, and tested. This Pd film is known to react to H 2, yielding a change in the complex refractive index and thus also the laser's output power. As the propagating wave travels through the device, the evanescent portions of the wave interact with these changing optical properties, yielding a change in optical output power as a function of H 2 concentration. The measurement results show that there is a definite change in output power as the H2 concentration is increased. The measured sensitivity of these devices is shown to be about a 2% fractional power change per percent H2.
AB - A novel type of hydrogen (H2) sensor utilizing a thin film of palladium (Pd) deposited on the ridge of an edge-emitting laser has been designed, fabricated, and tested. This Pd film is known to react to H 2, yielding a change in the complex refractive index and thus also the laser's output power. As the propagating wave travels through the device, the evanescent portions of the wave interact with these changing optical properties, yielding a change in optical output power as a function of H 2 concentration. The measurement results show that there is a definite change in output power as the H2 concentration is increased. The measured sensitivity of these devices is shown to be about a 2% fractional power change per percent H2.
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U2 - 10.1109/ICSENS.2010.5689910
DO - 10.1109/ICSENS.2010.5689910
M3 - Conference contribution
AN - SCOPUS:79951897600
SN - 9781424481682
T3 - Proceedings of IEEE Sensors
SP - 1710
EP - 1713
BT - IEEE Sensors 2010 Conference, SENSORS 2010
T2 - 9th IEEE Sensors Conference 2010, SENSORS 2010
Y2 - 1 November 2010 through 4 November 2010
ER -