1.57 Micron High Pulse Energy Single Frequency Fiber Laser

We propose to demonstrate and build a 1.572 micron single frequency high pulse energy and high peak power fiber laser by using an innovative Er-doped gain fiber with large core diameter and high gain per unit length. 1.572 micron single frequency high energy and high peak power fiber laser is needed for accurately measuring column CO2 concentrations . In Phase I, we will design and fabricate the large core diameter fiber, demonstrate high gain per unit length at 1.572 micron, and demonstrate high pulse energy and high peak power fiber laser with a short piece of gain fiber. Successful demonstration of such a fiber laser will enable many new NASA and commercial applications.