TY - GEN
T1 - Modeling and design of a highly compact chaotic cavity for optical gas sensing applications
AU - Qu, Dongxia
AU - Gmachl, Claire F.
PY - 2007
Y1 - 2007
N2 - We present a novel class of compact, robust, and potentially cost-effective chaotic cavities for trace-gas sensing applications. The cavity consists of a single, closed, reflecting surface and can support up to 15.5 meter of optical path length with a cavity volume of only 68 cm3. The design is based on quasi-chaotic ray dynamics in a 3-dimensional (3-D) deformed sphere. Within the cavity, light traces out a quasi-stable trajectory that has been improved to achieve long optical path length and little beam overlap. The results show that the proposed chaotic cavity effectively refocuses the beam as the light bounces off the cavity wall. We modeled, fabricated, and tested a prototype cavity. The chaotic cavity can successfully achieve a 40-pass trajectory with a pulsed AlGaInP diode laser emitting at 661 nm. The experimental results agree well with calculations.
AB - We present a novel class of compact, robust, and potentially cost-effective chaotic cavities for trace-gas sensing applications. The cavity consists of a single, closed, reflecting surface and can support up to 15.5 meter of optical path length with a cavity volume of only 68 cm3. The design is based on quasi-chaotic ray dynamics in a 3-dimensional (3-D) deformed sphere. Within the cavity, light traces out a quasi-stable trajectory that has been improved to achieve long optical path length and little beam overlap. The results show that the proposed chaotic cavity effectively refocuses the beam as the light bounces off the cavity wall. We modeled, fabricated, and tested a prototype cavity. The chaotic cavity can successfully achieve a 40-pass trajectory with a pulsed AlGaInP diode laser emitting at 661 nm. The experimental results agree well with calculations.
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U2 - 10.1109/ICSENS.2007.4388661
DO - 10.1109/ICSENS.2007.4388661
M3 - Conference contribution
AN - SCOPUS:48349086933
SN - 1424412617
SN - 9781424412617
T3 - Proceedings of IEEE Sensors
SP - 1349
EP - 1352
BT - The 6th IEEE Conference on SENSORS, IEEE SENSORS 2007
T2 - 6th IEEE Conference on SENSORS, IEEE SENSORS 2007
Y2 - 28 October 2007 through 31 October 2007
ER -