StockerYale (Salem, NH) provides design and prototyping services for subsystems in rare-earth-doped fiber lasers. The company delivers a variety of OEM fiber subsystems, including fiber pre-amps for amplification of seed sources, high power fiber amplifiers, Q-switched fiber laser subsystems, gain-switched fiber laser subsystems, and ASE sources. Fiber dopants include erbium, ytterbium, neodymium, thulium and other rare earths.