Semiconductor Laser Chip (IMAGE) Lehigh University Caption A semiconductor laser chip measuring approximately 3mm x 1.5mm contains 10 lasers. A scanning electron microscopy magnification (right) shows one of the laser cavities. Periodic slits in the thin-film top metal layer provide the distributed feedback in the cavity. Credit Sushil Kumar 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.