Hi, I have a master of science degree in photonics. I wanted to pursue a career in photonics related fields. My major interests are in nonlinear optics,laser physics,fiber optics and material science. I have received an offer for PhD in electrical engineering(micro-systems and photonics group) in the field of tunable diode laser spectroscopy for gas exhaust measurement. I am really in a fix because I am afraid a PhD in Electrical and Electronic Engg will derail me from the physics research track, and I will not be able to work in Physics later on. kindly advice me on this topic. PS: my supervisor is a Physicist from the univ of Manchester.