Design of NO<sub>2</sub> photoacoustic sensor with high reflective mirror based on low power blue diode laser

Design of NO₂ photoacoustic sensor with high reflective mirror based on low power blue diode laser

Jin Hua-Wei^{1, 2, 6}, Xie Pin-Hua^{1, 3, 4, 5, †}, Hu Ren-Zhi^{1, 2, ‡}, Huang Chong-Chong^{1, 2}, Lin Chuan¹, Wang Feng-Yang^{1, 2}

Background noise and excitation signal varying with time.