Generation of stable two-color laser pulses in photonic crystal fiber for microscopy

Abstract

We have generated two-color laser pulses in the visible range from a photonic crystal fiber pumped with a femtosecond Ti:sapphire oscillator. The central wavelengths of the two peaks are 564 and 644 nm with the tunable range of about 10 nm by adjusting the pump intensity. The average power of each peak is higher than 1 mW and the rms stability is 1.3%, which is nearly the same as the pump laser. The most probable mechanism of the formation of the two-color pulses is high-order soliton fission. The two-color femtosecond pulses are useful in microscopy. (C) 2014 The Japan Society of Applied Physics