Wavelength tunable ultra-short pulses based on a flat broadband spectrum generated in a nonlinear ytterbium-doped fiber amplifier
(color online) Experimental setup for the nonlinear Yb-doped amplifier system. WDM: wavelength division multiplex, YDF: Yb-doped fiber, SMF: single mode fiber, QWP: quarter wave plate, HWP: half wave plate, PBS: polarized beam splitter, FR: Faraday rotator, BF: birefringence filter, ISO: isolator, DCYDF: double-cladding Yb-doped fiber.
