Single-Mode Semiconductor Laser Exhibits High Power, Scalability . BERKELEY, Calif., July 1, 2022 — A semiconductor laser developed by University of California, Berkeley (UC Berkeley) researchers accomplishes an elusive goal in the field of optics : the ability to maintain a single mode of emitted light while maintaining the ability to scale up in size and power. The work shows that size does not have to come at the expense of coherence, enabling lasers to be more powerf...