Presentation Information
[23a-12A-4]Numerical simulation of mid-infrared up-conversion ghost imaging
〇(M2)Ryusei Iwata1, Asuka Nakatani1, Jonathan de Clermont-Gallerande1, Takenobu Suzuki1, Yasutake Ohishi1 (1.Toyota Tech. Inst.)
Keywords:
up-conversion imaging,ghost imaging,mid-infrared
In comparison to visible imaging sensors, mid-infrared imaging sensors are inferior in terms of cost, sensitivity, response speed, and resolution. Mid-infrared upconversion imaging is a technique that converts mid-infrared light into visible light through sum-frequency generation, enabling mid-infrared imaging with visible imaging sensors. However, the conversion efficiency is still low, and the converted light is weak. Applying ghost imaging could lead to the realization of highly sensitive mid-infrared upconversion imaging. Therefore, this study proposes an imaging method using this approach and evaluates its performance through numerical calculations, taking into account the impact of resolution degradation due to wavelength conversion. The numerical calculations were performed for incoherent light, coherent light, and broadband light sources. The calculations revealed that incoherent light results in a higher PSNR (Peak Signal-to-Noise Ratio) compared to coherent light, and can suppress image distortions that are a problem in broadband upconversion imaging.