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Laser & Optoelectronics Progress, Volume. 55, Issue 3, 032303(2018)

Hyperspectral Microimaging System Based on Double-Filtering Technology of Acousto-Optic Tunable Filter and Its Image Analysis

Lei Shi1,2, Chunguang Zhang1,2, Hao Wang1,2、*, and Jiangwei Yuan1,2
Author Affiliations
  • 1 Fujian Provincial Key Laboratory for Photonics Technology, Fuzhou, Fujian 350007, China
  • 2 Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou, Fujian 350007, China
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    AbstractGet PDF(in Chinese)
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    Figures & Tables(9)
    (a) Theoretical diagram of doubler filtering; (b) theoretical diagram of relation between diffraction efficiency and spectral width of double filtering

    Fig. 1. (a) Theoretical diagram of doubler filtering; (b) theoretical diagram of relation between diffraction efficiency and spectral width of double filtering

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    Principle scheme of experimental system

    Fig. 2. Principle scheme of experimental system

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    Measuring curves for the diffraction efficiency of single filtering and double filtering

    Fig. 3. Measuring curves for the diffraction efficiency of single filtering and double filtering

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    Theoretical calculation and measuring result of the maximum diffraction efficiency of double filtering

    Fig. 4. Theoretical calculation and measuring result of the maximum diffraction efficiency of double filtering

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    Theoretical calculation and measuring result of the spectral width of double filtering

    Fig. 5. Theoretical calculation and measuring result of the spectral width of double filtering

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    Spectroscopic principle for AOTF

    Fig. 6. Spectroscopic principle for AOTF

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    (a) Gastric cancer micrograph; (b) fusion graph of hyperspectral RGB image; (c) gray value curves of the blue vertical line region; (d) gray value curves of the purple vertical line region

    Fig. 7. (a) Gastric cancer micrograph; (b) fusion graph of hyperspectral RGB image; (c) gray value curves of the blue vertical line region; (d) gray value curves of the purple vertical line region

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    • Table 1. Designed parameters and performance index of AOTF1 and AOTF2

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      Table 1. Designed parameters and performance index of AOTF1 and AOTF2

      ItemAOTF1AOTF2
      Workingwaveband /nm400-1000400-1000
      Tunable rangeof acousticfrequency /MHz75.3-223.5107.5-193
      Incident polarangle /(°)23.821.17
      Diffraction polarangle /(°)21.1723.8
      Optical wedgeangle /(°)6.156.50
      Spectral resolution /nm218.5@632.8174.9@632.8

    • Table 2. Experimental data of single filtering and double filtering at the same center wavelength

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      Table 2. Experimental data of single filtering and double filtering at the same center wavelength

      fa1 /MHzfa2 /MHzλ(λ1=λ12) /nmΔλ1 /nmΔλ12 /nmR1=λ1/Δλ1R12=λ12/Δλ12
      120121.4628.231.581.01397.62622.04
      125126.4607.941.400.94434.25646.74
      130131.2590.771.560.96378.70615.38
      135136.1572.241.300.83440.18665.39
      140140.1556.411.180.77515.19772.61
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    Lei Shi, Chunguang Zhang, Hao Wang, Jiangwei Yuan. Hyperspectral Microimaging System Based on Double-Filtering Technology of Acousto-Optic Tunable Filter and Its Image Analysis[J]. Laser & Optoelectronics Progress, 2018, 55(3): 032303

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    Paper Information

    Category: Optical devices

    Received: Sep. 5, 2017

    Accepted: --

    Published Online: Sep. 10, 2018

    The Author Email: Wang Hao (haowang@fjnu.edu.cn)

    DOI:10.3788/LOP55.032303

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology