1 June 2002 Optical sensing by using photonic quantum ring lasers and resonance-enhanced photodetectors
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Abstract
We describe an optical sensor using photonic quantum ring lasers and resonance-enhanced photodetectors for the purpose of counting object discrimination. Due to the angle-dependent peak wavelength shift characteristics of the photonic quantum ring laser, an emission at an angle of 0~30 deg from a perpendicular direction was reflected and absorbed in the resonance-enhanced photodetector, with a peak responsivity of 0.107 A/W at 757 nm. The use of the photonic quantum ring laser at an optimized angle in this monolithically integrated system, based on a distributed Bragg partial reflector structure, can lead to a compact, low cost, dust-free optical sensor and counter.
Byeong Hoon Park, Seung Duk Baek, Jun Yeon Kim, Joongwoo Bae, Haewook Han, "Optical sensing by using photonic quantum ring lasers and resonance-enhanced photodetectors," Optical Engineering 41(6), (1 June 2002). https://doi.org/10.1117/1.1476940
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