Efficient High-Power Tunable Terahertz Sources using Optical Techniques

The main objective of the proposed Phase I project is to leverage the technology of THz generation in resonantly pumped QPM GaAs structures jointly developed by Stanford University and Microtech Instruments, Inc. and identify the best approach for product development activities planned for Phase II of the project. While high THz power, good efficiency and tunability across 0.5-4 THz range has been clearly demonstrated by the latest experiments at Stanford, the current THz OPO system is probably too complex to enable a compact and maintenance free instrument. Optimization of the THz OPO design with an objective to reduce complexity while maintaining high output power, good efficiency and tunability will be the primary focus of Phase 1 of the project. BENEFIT: If Phase I of the proposed project is successful, Microtech will introduce a product based on optical down conversion in QPM GaAs in early 2009. This is likely to be a narrow band THz source, covering spectral range around 1.5 THz and delivering 0.1-1 mW of power. Such product will compliment existing portfolio of THz generators offered by Microtech Instruments. It will also increase awareness of scientific and industrial community of QPM GaAs technology, creating market for next generations of THz sources based on this technology. Development of such systems (tunable across 0.5-5 THz range and delivering up to 10 mW of power) will be the main objective for Phase II of the project.