We generated 56 mW of average power at 384 nm in periodically poled lithium tantalate by use of a visible fiber source based on a variable-pulse format seeded Yb–Er amplifier and frequency upconversion in periodically poled KTP. The feasibility of high-average-power, wide ultraviolet wavelength–range fiber-based sources is evaluated.
© 2000 Optical Society of America
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4360) Nonlinear optics : Nonlinear optics, devices
P. A. Champert, S. V. Popov, J. R. Taylor, and J. P. Meyn, "Efficient second-harmonic generation at 384 nm in periodically poled lithium tantalate by use of a visible Yb--Er-seeded fiber source," Opt. Lett. 25, 1252-1254 (2000)