The new LDL Direct Diode Lasers offer a compact and efficient solution for modern heat treatment. Thanks to their direct photon emission, they achieve a wall-plug efficiency of over 56%, setting new standards in heat treating applications. The compact laser systems are currently available with output powers of over 30 kW. Due to their simple system architecture, they are not only cost-effective but also easy to implement. The modular system design allows for customer-specific and tailor-made solutions. The segmented power submodules can be precisely controlled, which opens up a wide range of beam shaping options such as spot trimming. The ability to work with minimal or remote working distances provides maximum flexibility.