Quantum Cascade Lasers Integrated above Silicon Waveguides (IMAGE) Optica Caption 3-D artistic depiction of multiple Quantum Cascade Lasers integrated above silicon waveguides. Credit Alexander Spott Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.