Craig Arnold is Co-Founder and Chief Technology Consultant of TAG Optics, a specialty lens manufacturing company which develops and produces custom built tunable acoustic gradient index lenses. Craig is the originator of the technology. He is an Associate Professor in the department of Mechanical and Aerospace Engineering at Princeton and performs extensive research in the field of laser processing and shaping laser material interactions. Holder of numerous issued and pending US patent, Craig received his PhD in physics from Harvard University and was a NRC Post-Doc at the US Naval Research laboratory in Washington DC.