Individually addressable visible laser arrays for display and printing applications

Individually addressable laser diode arrays (IABs) are commercially demonstrated in the printing industry. These laser arrays are typically working at 8xx nm and 9xx nm wavelengths. Individually addressable laser diode arrays operating in visible region has been less reported and especially with limited commercial success. Yet, there is increasing interest in different variants of visible laser arrays not only in printing industry, but also in various display applications including head-up-displays and AR/VR products for different fields like automotive, consumer and medical markets. In this work we report the state-of-the-art high brightness individually addressable diode laser arrays operating at visible red wavelengths. The single-mode red IAB design is scalable from a few individually addressable emitters to tens of emitters per array with a highly uniform operation and repeatability and can be applied over the whole visible red spectrum from 630nm to 690nm. The individually addressable arrays at 640-660nm with a dense <100μm device pitch produce a record 3W total output power per array, with 0.85 W/A slope efficiency. The red IABs show excellent uniformity and stable long-term operation and are perfectly suited e.g. for various display applications or wherever there is a need for commercially viable high brightness individually addressable visible laser arrays.