Development of Eye-Safe Fiber Lasers Near 2 μm

Eye-safe fiber laser sources near 2 μm have attracted a lot of interest in space, defense, medical, and industrial applications. We review our latest developments of various fiber laser sources operating near 2 μm, which include single-frequency CW lasers, wavelength-swept lasers, power-scaled nanosecond pulsed lasers, and various mode-locked lasers. Potential applications of these mid-infrared fiber laser sources are also discussed.