IMM Photonics in Munich has now extended its diverse portfolio of laser diodes to include an efficient, low-cost and European-made niche product. The single mode VCSEL 850 nm laser diode is contained in a compact TO46 housing. It can be used as a laser light source for optical sensors in industry and life science, as a barcode reader in supermarkets, in range and velocity measurements or for optical target marking (pointer). What makes this product, manufactured on behalf of IMM Photonics, so special is the polarization-maintaining characteristic of the laser diode. This essential feature is normally not present with conventional VCSEL laser diodes. In addition, in contrast to conventional laser diodes with an angular cross-section, the single mode VCSEL 850 nm has a round beam cross-section – a property that is indispensable in many of the above-mentioned areas of application. IMM Photonics is already planning to further expand its range of special VCSEL laser diodes in response to feedback from the market.