Originally Posted by
weartronics
Although the different modules may use the same case and the same pump diodes, the internal design of DPSS, SHG and any consequent problems are quite different for each wavelength. The power stability of e.g. 473nm is particularly sensitive to temperature fluctuations, so individual TECs for each component are common. Some other wavelengths e.g. 532nm are much less sensitive to this, so one TEC can be used for the whole module. This is a complex issue which is difficult to resolve for the outsider. You have to rely on the manufacturers specifications for the module as a whole - they are probably accurate.