Researchers have developed a high-power tunable laser based on silicon photonics, achieving nearly 2 watts using an integrated large-mode area (LMA) amplifier. This advancement addresses the challenge of generating high signal power in miniaturized systems, which typically have limited optical energy storage compared to larger fiber or solid-state platforms. The new device, designed for deployment on satellites orbiting distant planets, generates high-power light around 1.9 μm, making it capable of mapping atmospheric chemicals essential for life such as carbon dioxide, water, and ammonia. This breakthrough could significantly reduce satellite costs and size, enhancing capabilities in space exploration and other fields while ensuring mass production of integrated photonics systems. The researchers, led by Dr. Neetesh Singh and Prof. Franz Kärtner, believe this innovation may revolutionize the field and enable more effective sensing technologies like LIDAR in compact satellites. The work is part of a broader push for high-density integration in photonics, providing essential high-power signal generation to complement the trend of miniaturization in technology. This research was supported by the EU Horizon 2020 Framework Programme and the German Deutsche Forschungsgemeinschaft.
