论文标题
空间极化独立的参数上转换矢量结构的光
Spatial polarization independent parametric upconversion of vectorially structured light
论文作者
论文摘要
空间极化无关（SPI）参数转换是许多光学应用的基础，例如通过向量模式携带的通信通道的SPI频率接口和用于极化分辨成像的上转换检测。但是，意识到这种转换仍然是一个挑战。在这项原理验证工作中，我们使用基于II型第二谐波生成（SHG）的极化SAGNAC非线性干涉仪（SHG）证明了SPI参数上转换。我们的结果表明，矢量（包括极化和强度）曲线和相关的矢量信号梁状态可以以高忠诚度转移到SHG光束上。该原理基于矢量模式为量子/经典通道的SPI频率界面奠定了基础，并为在中/远界区域中极化分辨成像的上转换检测铺平了道路。
Spatial polarization independent (SPI) parametric conversion is the basis of many optical applications, such as SPI frequency interface for communication channels carried by vector modes and upconversion detection for polarization-resolved imaging. However, realizing such conversion remains a challenge. In this proof-of-principle work, we demonstrated SPI parametric upconversion using a polarization Sagnac nonlinear interferometer based on type-II second-harmonic generation (SHG). Our results show that the vector (including both polarization and intensity) profile and associated SOC state of the vector signal beam could be transferred to the SHG beam with a high fidelity. The principle lays a foundation of SPI frequency interface for quantum/classical channels based on vector modes and also paves the way for upconversion detection of polarization-resolved imaging in Mid-/far-infrared region.
