Acta Optica Sinica, Volume. 39, Issue 5, 0523001(2019)
Miniature Chemiluminescence NO Sensor Based on PIN Photodiode
A miniature chemiluminescence NO sensor is developed using a miniature low-cost PIN photodiode as the photoelectric detector. Five optoelectronic components of the Si detector and InGaAs detector are selected to investigate their relationship with the spectral response of NO luminescence and noise. The experimental results show that the 1.2-mm-length rectangular Si detector is the best one with the advantages of a sensitive response, a low dark-current noise, and the lowest signal-to-noise ratio. Moreover, a small optical cavity is designed, small amount of NO luminescence with a volume fraction of 2×10 -6-2×10 -4 is measured, and the linearity is 0.9993. The response time of the whole system is approximately 0.13 s and the sensor weight is less than 50 g. Thus the proposed sensor is very suitable for the online monitoring of NO gas in the industrial pollution source.
Get Citation
Copy Citation Text
Hang Li, Wenqing Liu, Lu Yao. Miniature Chemiluminescence NO Sensor Based on PIN Photodiode[J]. Acta Optica Sinica, 2019, 39(5): 0523001
Category: Optical Devices
Received: Oct. 22, 2018
Accepted: Jan. 2, 2019
Published Online: May. 10, 2019
The Author Email: