Ultrashort Pulse Quantum Dot Laser for Machining Applications

Optical micromachining using ultrafast lasers (< 1 ps) is an emerging technology that can create high quality nanoscale structures though a variety of matter-light interactions. Commercial success requires the development of inexpensive ultrafast laser systems that can tune system parameters for changing feature scales and removal rates in real-time. This ability requires real-time changes in fluence, spot size, and position at high-speeds with high precision and accuracy. Technical challenges include the development of new laser systems more suited for micro-machining applications, the development of new beam delivery systems for beam size adjustment, and positioning systems that can easily move large distances with nanometer precision and accuracy. In this project, Mesa Photonics and the University of New Mexico will develop a new laser system based on quantum dot technology that will be able to tune repetition rates and pulse energy in real time. The Phase I effort will focus on demonstrating the feasibility of our new laser design. In Phase II, we will implement our laser design in an ultrafast laser-based machining system. BENEFIT: Better micromachining technology will lower costs of manufacturing of semiconductors and allow for the development of new metamaterials, sensors, photonic materials for both miltary and consumers markets. Medical applications including medical imaging are other applications.