Efficient high-power generation of visible and mid-infrared light by degenerate four-wave-mixing in a large-mode-area photonic-crystal fiber

摘要

An efficient and simple approach for converting pulsed near-IR laser radiation into visible and mid-IR lightnby exploiting degenerate four-wave-mixing in an endlessly single-mode, large-mode-area photonic-crystal fibernis presented. Coupling a 1 MHz, 200 ps,8 W average power pulsed source emitting at 1064 nm into thisnfiber results in average powers of 3 W at 673 nm signal wavelength and of 450 mW at 2539 nm idler wavelength,nrespectively. The excellent pulse energy conversion efficiencies of 35% for the signal and 6% for thenidler wavelength are due to the unique combination of characteristics of this type of fiber. © 2009 OpticalnSociety of America