You-bo HU, Dong-yang GAO, Jian-jun LI, Xiao-bing ZHENG. Experimental Study of Radiometer Based on Spontaneous Parametric Down-conversion Calibration[J]. Acta Photonica Sinica, 2020, 49(6): 0630001
- Acta Photonica Sinica
- Vol. 49, Issue 6, 0630001 (2020)
Fig. 1. Diagram of the direction of photon emission generated by SPDC
Fig. 2. The relationship between wavelength and divergence angle of SPDC
Fig. 3. Principle of absolute quantum efficiency calibration for detectors with loss or decay
Fig. 4. Schematic diagram of the radiometer
Fig. 5. Schematic diagram of spontaneous parametric down conversion spectrum measurement
Fig. 6. Experimental diagram of radiometer loss or decay test
Fig. 7. Photon ring images with different wavelengths
Fig. 8. Coincidence peaks with different wavelengths
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Table 1. Theoretical value and measured value of divergence angle
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Table 2. Radiance of halogen-tungsten lamp measured by radiometer under different optical decay conditions
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Table 3. Radiance of halogen-tungsten lamp measured by radiometer under different electronics decay conditions
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