Photonic Products (Hertfordshire, UK) has launched the Opnext HL6750MG 685nm Al-GaInP laser diode with a multi-quantum well structure. It has an optical output power of 50 mW CW, a package size of 5.6 mm, and a built-in photodiode for monitoring laser output which enables control of the auto power circuit. Supplied in a 5.6mm package, the Opnext HL6750MG is a single longitudinal mode laser diode with an optical power of 50 mW CW at a visible wavelength of 685 nm. It features an operating current of 75 mA, an operating voltage of 2.3 V, and a threshold current of 30 mA. The monitoring output current is 0.15 mA, while the operating temperature range is -10°C to 70°C. The Opnext HL6750MG is suitable for use in medical and biomedical applications such as X-ray scanners, industrial and medical sensor light sources, and as a light source for optical equipment such as distance meters, barcode scanners, and high-resolution CTP.