Analysis of Influence of Underwater Medium Concentration on Laser Polarization Transmission Characteristics

Jinghang He; Jin Duan; Juntong Zhan; Liqun He; Lijuan Cai; Su Zhang

doi:10.3788/LOP202158.0529002

Laser & Optoelectronics Progress, Volume. 58, Issue 5, 0529002(2021)

Analysis of Influence of Underwater Medium Concentration on Laser Polarization Transmission Characteristics

Jinghang He¹, Jin Duan^1,2、*, Juntong Zhan², Liqun He¹, Lijuan Cai¹, and Su Zhang²

¹Electronics and Information Engineering Institute, Changchun University of Science and Technology, Changchun , Jilin 130022, China

²NUERC of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun , Jilin 130022, China

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Figures & Tables(8)

Fig. 1. Flowchart of Monte Carlo simulation

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Fig. 2. Reference coordinate system rotation

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Fig. 3. Schematic diagram of polarization transmission experiment

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Fig. 4. Physical diagram of experimental device. (a) Laser emitting end; (b) medium transmitting end; (c) signal receiving end

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Fig. 5. Simulation curves of degree of polarization decreasing with increase of optical thickness

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Fig. 6. Experimental results of effect of optical thickness on degree of polarization

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Table 1. Components required for experiment

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Table 1. Components required for experiment

Component	Parameter
532 nm laser	Power 50 mW, 1 set
Polarization state measuring instrument	Receiving range 400-700 nm, 1 set
Optical power meter	Sensor wavelength rangea 185 nm-25 μm, power range 100 pW to 200 W, 1 set
Energy splitting prism	T∶R=50%∶50%，1 piece
Water tank	100 cm×45 cm×45 cm，1 piece
Attenuator	1‒9 times fixed attenuation, 1 group
Linear polarizer	400‒900 nm、20 mm clear aperture，1 piece
1/4 wave plate	532 nm、20 mm clear aperture，1 piece
Computer	Processor is Intel core i7，2 sets

Table 2. Correspondence between number density of polystyrene beads and optical thickness
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Table 2. Correspondence between number density of polystyrene beads and optical thickness
Number density of polystyrene beads /() Optical thickness
0.01 0.22
0.50 0.46
1.00 0.98
1.30 1.37
1.60 1.70
10.00 1.99
50.00 2.30
100.00 2.99

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Jinghang He, Jin Duan, Juntong Zhan, Liqun He, Lijuan Cai, Su Zhang. Analysis of Influence of Underwater Medium Concentration on Laser Polarization Transmission Characteristics[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0529002

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