When some special kinds of solids are excited by pump radiation,if the fluorescence wavelength is shorter than the wavelength of pump radiation,the process which is called Anti-Stokes process will take some heat away from the cooling element.
这一过程也就是"反斯托克斯过程",它对固体具有冷却的效果,这一原理也就是"光学制冷器"的理论依据。
