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光反射或光透射光谱技术是我们通常用来了解材料光谱特性的方法。这类传统的光谱技术用于一些不透明的、弱吸收的(如吸收系数10cm)及光学质量差的漫散射的材料时有很大的局限性,甚至无能为力。光热谱技术是最近发展起来的新光谱技术.它的基本原理是:介质材料吸收了电磁波以后,
Light reflection or light transmission spectroscopy is the method we commonly use to understand the spectral properties of a material. Such conventional spectroscopic techniques have limitations and even powerlessness when applied to some opaque, weakly absorbing (eg, absorption coefficient of 10cm) and diffusely scattering material of poor optical quality. Photothermal spectroscopy is a recently developed new spectroscopy technique whose basic principle is that after the dielectric material absorbs the electromagnetic wave,