Harvard University photonics spinoff SiOnyx Inc. of Beverly, Mass., has completed its $12.5 million series B financing, with laser giant !%Coherent Inc.%! of Santa Clara, Calif., as one of its new investors. Based on a laser implant method discovered at Harvard and commonly referred to as “black silicon,” SiOnyx’s patented semiconductor process enhances the performance of light-sensing devices across a range of applications in the consumer, industrial, medical and defense industries and could lead to the development of smaller, cheaper, high-performing silicon photonic devices, the company said. Other new investors in the series B funding round were venture capital and growth equity firm Crosslink Capital and Vulcan Capital, the venture firm started by Microsoft co-founder Paul Allen. Existing investors Polaris Venture Partners and Harris & Harris also participated, SiOnyx said.