Advanced Photonic Sciences develops and manufactures diode-pumped solid-state lasers, laser diode modules, and custom photonic systems from its Pennsylvania base. APS also runs a spectroscopy laboratory for characterizing laser and nonlinear materials, with measurements available from room temperature down to about 77 K. Its product line includes distinctive high-power 445-nanometer fiber-coupled systems and the ultra-narrow-linewidth Brag-Loc compact laser.