福格特函数(Voigt functions)是一种在天体物理学、等离子物理学、中子散射、激光光谱学等学科中常见的特殊函数，分为福格特U函数和福格特V函数两种，定义如下

• 中子截面
• 中子衍射技术
• 拉曼光谱学

In spectroscopy, the Voigt profile (named after Woldemar Voigt) is a line profile resulting from the convolution of two broadening mechanisms, one of which alone would produce a Gaussian profile (usually, as a result of the Doppler broadening), and the other would produce a Lorentzian profile. Voigt profiles are common in many branches of spectroscopy and diffraction. Due to the computational expense of the convolution operation, the Voigt profile is often approximated using a pseudo-Voigt profile.