| http://www.w3.org/ns/prov#value | - In some embodiments, the present invention provides a method that includes providing a plurality of laser beams including a first laser beam at a first characteristic wavelength having a full-width half maximum (FWHM) linewidth of at most 1 nm and a second laser beam at a second characteristic wavelength having an FWHM linewidth of at most 1 nm; providing a diffractive output grating; providing on
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