High-Performance Passively Q-Switched Microchip Laser

This proposal addresses the requirement to develop an ultra-compact, high-performance, passively Q-switched short pulse microchip laser that is appropriate for use in a military system environment. We plan to achieve the program goals through specific research paths and perform critical experiments that will demonstrate the effectiveness of the improvements in Phase I. In addition, to these design upgrades alternative microchip laser materials will be analysed and tested. The current baseline material is Nd:YAG. We will review alternative materials and design experiments to evaluate the suitability of additional material(s) to improve microchip laser performance in specific applications. Yb:YAG is the principal candidate since it has a very small quantum defect, low heat generation from each pulse, and Nd:YLF also offers advantages which will be considered since it has excellent polarization properties and a long fluorescent lifetime, requiring smaller pump power.BENEFITS: The potential markets for microlasers are holographic systems, biomedical instrumentation fluorescence spectroscopy, laser display R&D, and wafer inspection. The technology will displace argon-ion lasers or HeCd lasers currently used in these applications. The biomedical front is another opportunity to commercialize microlaser sources for the development of a time fluorescence spectroscopy instrument for non-evasive detection of cancerous tissue and human genetic research. The commercial market volume applications for this technology relate to four main areas: Laser Marking Systems, Automotive Industry, Machine Vision, and Biomedical Diagnostic Systems. The goal for future vehicles is to incorporate "smart"-functionality features. Automobile engine control systems incorporating computer technology are a standard feature of all new cars today. Optical sensor technologies are now in development, automotive companies have demonstrated that lasers will function in worst case weather conditions to provide better short range resolution than competing microwave technologies. The potential market for collision avoidance applications potentially could reach 100,000s units annually.