320 nm DPSS lasers are ultraviolet (UV) Laser. The 320nm can be continuous-wave (CW) or Modulation Pulsed. Most of the 320nm lasers are from 1 mW up to 100 mW. 320nm laser are used for photoluminescence (PL) measurements on semiconductor materials, steady-state PL spectroscopy on semiconductors, fluorescence excitation, Raman spectroscopy, flow cytometry, semiconductor inspection, and laser lithography.
Photoluminescence (PL) spectroscopy is a non-destructive, contactless, and highly sensitive optical method used to analyze the electronic structure, purity, and crystal quality of materials. By exciting electrons with light (usually a laser), it measures the resulting photon emission as a function of wavelength, providing insights into bandgap energy, impurities, and defect concentrations.
