Chinese Optics Letters, Volume. 18, Issue 11, 111402(2020)
Design and analysis of a range-extended acidity detector based on a Nile red laser with tandem cuvette system
Fig. 1. Experimental setup. A potassium titanyl phosphate (KTP) crystal served as a frequency doubling crystal; the cavity mirror had high transmission (HT) at 532 nm (
Fig. 2. (a) Laser/FL spectrum. (b) Slope efficiency curve and FWHM of the output spectrum. (c) Oscilloscope trace of output laser. (d) Spectra of output laser in 60 μg/mL NR/ethanol solution containing SA in different concentrations. (e) Spectra of output laser in 200 μg/mL NR/ethanol solution containing SA in different concentrations.
Fig. 3. Bathochromic shift of laser wavelength corresponding to different concentrations of doped SA.
Fig. 4. (a) Tandem cuvette detection system of SA. Inset figure: details of tandem cuvette structure containing R6G/ethanol and NR/ethanol with SA. (b) Spectra of output laser in tandem cuvette system with high concentration of SA from 0 ppm to 500 ppm. The laser peak at 565 nm was in the spectrum of R6G/ethanol. (c) Spectra of output laser in tandem cuvette system with low concentration of SA from 1 ppm to 10 ppm. The laser peak at 565 nm was in the spectrum of R6G/ethanol.
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Yuwei Fang, Junjie Cheng, Shengbo Wang, Chun Gu, Gang Zou, Hai Ming, Lixin Xu. Design and analysis of a range-extended acidity detector based on a Nile red laser with tandem cuvette system[J]. Chinese Optics Letters, 2020, 18(11): 111402
Category: Lasers, Optical Amplifiers, and Laser Optics
Received: Feb. 26, 2020
Accepted: Jul. 14, 2020
Published Online: Sep. 21, 2020
The Author Email: Lixin Xu (xulixin@ustc.edu.cn)