SED-GPY-N — SED-GPY-N Portable Laser Alloy Analyzer

A pulsed 1064 nm laser (50 Hz, 5–6 mJ pulse energy, Class 3B — eye-safe) is focused on the sample surface, generating a plasma. As the plasma cools, element atoms emit characteristic spectra (190–420 nm, 0.07 nm resolution), measured by the spectrometer. An Android-based system calculates elemental concentrations. Analysis is performed in an argon atmosphere to improve signal-to-noise ratio. Raster scanning averages multiple points to reduce sample non-uniformity error. Automatic lens and sample surface cleaning prior to measurement.