Journal of Atmospheric and Environmental Optics ›› 2010, Vol. 5 ›› Issue (5): 358-365.

• 论文 • Previous Articles     Next Articles

Investigation of Mid-Infrared Radiance Calibration Based on Parametric Amplification

XUE Xiang-qun, ZHENG Xiao-bing, LI Jian-jun, ZHANG Wei, LI Kai   

  1. (Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China)
  • Received:2010-04-07 Revised:2010-04-12 Online:2010-09-28 Published:2010-09-14

Abstract:

The principle、the method and the experimental system of mid-infrared radiance calibration based on parametric amplification technique were introduced. The equation between different polarization source and its photons per mode was deduced. A high power CW laser stabilized at 532 nm was used to pump a LiNbO3 nonlinear crystal, producing two correlated-photons whose wavelengths were 632.8 nm and 3.34 μm, respectively. The under-calibrated blackbody at 3.34 μm was injected along the direction of the infrared down-converted photons. With the high relativity of the VIS-IR photon pairs, through the measurement of the visible down-converted photons at 632.8 nm, the radiance of the blackbody source at 3.34 μm can be calibrated and 1.53% relative standard uncertainty was reported.

Key words: radiance, parametric amplification, correlated photons, photons per mode

CLC Number: