PSE Technology designs, manufactures, and markets precision scientific instruments used in basic and applied research, engineering, and production test applications. Their products include laser diode current sources, temperature controllers, mounting fixtures, optical power and wavelength meters, and precision fiber optic sources. The company focuses on serving the photonics test and measurement market, catering to scientists and engineers in corporations, educational institutions, and research laboratories. PSE Technology emphasizes customer-focused innovation, accountability, and integrity, offering custom and OEM products tailored to meet specific instrumentation challenges.