High power supercontinuum generation by dual-color femtosecond laser pulses in fused silica

High power supercontinuum (SC) is generated by focusing 800 nm and 400 nm femtosecond laser pulses in fused silica with a microlens array. It is found that the spectrum of the SC is getting broader compared with the case of a single laser pulse, and the spectral energy density between the two fundamental laser wavelengths is getting significantly higher by optimizing the phase matching angle of the BBO. It exceeds mu J/nm over 490 nm range which is from 380 nm to 870 nm, overcoming the disadvantage of relative lower power in the ranges far from the fundamental wavelength.

Automated summary

High power supercontinuum is generated by focusing 800 nm and 400 nm femtosecond laser pulses in fused silica. The spectral energy density between the two fundamental laser wavelengths is significantly increased by optimizing the phase matching angle, overcoming the disadvantage of lower power in ranges far from the fundamental wavelength.