Princeton Optronics Inc., formerly known as Princeton Electronic Systems Inc., designs, develops, and manufactures high power vertical cavity surface emitting diode lasers (VCSELs), diode pumped solid state lasers, tunable lasers and low noise diode pumped ultra stable lasers for industrial, medical, and defense markets. The company offers high power CW and quasi-CW diode lasers, high speed VCSEL devices and arrays, single mode VCSELs, VCSEL based illuminators, multichip modules, frequency doubled blue lasers, and seed lasers. It also provides various diode pumped laser modules, which include high energy Q-switched lasers, UV lasers, and various other lasers for material processing and medical applications. The company's products are used in illumination, sensing, solid state laser pumping, and U.S. military applications. In addition, the firm offers combined optical, mechanical, and thermal design for complex subsystems; rapid prototyping of complex optical subsystems; technical services, such as laser modeling software, finite element and optical analysis, optical bench experiments, rapid prototyping, product qualification, failure analysis, production, and reliability testing; and packaging technology services. The company sells its products through its sales representatives and distributors in Germany, Austria, Switzerland, Spain, France, the United Kingdom, Italy, Scandinavia, Norway, Sweden, Finland, Israel, China, Korea, and the United States. In parallel, PES developed its commercial business gaining recognition as the technology leader in its Voltage Controlled Oscillator (VCO) and Synthesizer product lines. Breakthrough research in Vertical Cavity Surface Emitting Lasers, low noise ultrastable lasers and tunable laser topologies, an outgrowth of DOD sponsored research, prompted the company to seek venture funding to focus on the market demand for tunable source components and sub-systems.