0.4-1.4 μm Visible to Near-Infrared WidelyBroadened Super Continuum Generation withEr-doped Ultrashort Pulse Fiber Laser System

摘要

Visible to near-infrared widely broadened super continuum generation isdemonstrated using ultrashort-pulse fiber laser system. Er-doped fiber chirped-pulseamplification system operated at 1550 nm in wavelength is used for the amplifier system, whichgenerated ultrashort-pulse of 112 fs in FWHM with output power of 160 mW, on average.Almost pedestal free 200 fs second harmonic generation pulse is generated at 780 nm regionusing periodically poled LiNbO_3 and conversion efficiency is as high as 37 %. 0.45-1.40 μmwidely broadened super continuum is generated in highly nonlinear photonic crystal fiber andspectrum flatness is within ±6 dB. All of the fiber devices are fusion spliced so that this systemshows a good stability.