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To improve quality of hyperspectral remote sensing and spectral-topographic recognition, novel compact and efficient imaging spectrometer schemes are necessary. The paper considers an imaging spectrometer based on the Offner scheme. Due to its compact size, imaging spectrometer with Offner configuration is promising for use in small and atmospheric satellites. We describe the Offner optical scheme,...
With suggested computational post-processing workflow for correcting optical distortions, the Fresnel lens can finally be used in lightweight and inexpensive computer vision sensors. Common methods for image enhancement do not comprehensively address the blurring artifacts caused by strong chromatic aberrations in images produced by a simple Fresnel optical system. To deliver image quality acceptable...
In this work the mathematical model of coherent population trapping effect which takes into account the distortion of the light spectrum and changing in light correlations inside the gas cell has been constructed. It was shown that decreasing in spectral width of the sidebands increases contrast of the CPT signal. We demonstrated the method of light shift suppression in optically dense medium. Optimization...
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