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Currently most of the data is taken from Weber's book Handbook of laser wavelengths [1], with newer data in particular for semiconductor lasers. For quasi-cw lasers (e.g. metal vapor lasers) the length of the full line gives the mean power.
The design is the same as the Treasury seal with a Bureau of Engraving and Printing inscription. Source Extracted from PDF version of the BEP's 2005 CFO Report (direct PDF URL [1] ).
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Laser engraving metal plates are manufactured with a finely polished metal, coated with an enamel paint made to be "burned off". At levels of 10 to 30 watts, excellent engravings are made as the enamel is removed quite cleanly. Much laser engraving is sold as exposed brass or silver-coated steel lettering on a black or dark-enamelled background.
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