Abstract

Laser sources in the visible wavelength regions are becoming very attractive due to the growing number of emerging applications in industry, medicine or science. As emitting laser materials in the visible are very few, efficient frequency conversion (second harmonic generation) as well as parametric processes (sum frequency generation or even four waves mixing (FWM)) to the visible are very promising solutions [1]. In this context, rare earth doped double clad fibers and in particular Ytterbium (Yb) doped fibers are ideal pump sources for these processes. Additionally, wide tunability in the visible could be induced by the broad amplification bandwidth of Yb-fiber lasers reported to range between 976nm and 1150nm [2, 3]. In this paper, we present a ps continuously tunable Yb-doped fiber laser emitting from 1020 nm to 1050 nm and used as a driving laser to produce an emission signal accordingly tunable from 740 nm to 910 nm via FWM in a microstructured fiber.

© 2015 IEEE