Wei Fan, Bo Liu, Yun Jiang. Study on dynamic wavelength matching technology of laser radar based on volume grating narrowband optical filtering[J]. Infrared and Laser Engineering, 2022, 51(7): 20210639
- Infrared and Laser Engineering
- Vol. 51, Issue 7, 20210639 (2022)
Fig. 1. Diagram of reflecting VBG
Fig. 2. Volume grating filtering characteristics
Fig. 3. Volume grating angle characteristics
Fig. 4. (a) The emission spectrum and VBG spectrum; (b) Simulation analysis of wavelength matching error
Fig. 5. Measurement of angular characteristics of 1 064 nm volume grating
Fig. 6. Design of wavelength tracking system
Fig. 7. Diagram of wavelength tracking system
Fig. 8. Relationship between angular resolution and central wavelength resolution
Fig. 9. Transmittance changes during volume grating angular scanning
Fig. 10. (a) Experimental results of wavelength matching tracking;(b) Analysis of wavelength matching error
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Table 1. Overview of tunable filter parameters
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Table 2. Wavelength tracking of fixed wavelength
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