Abstract

We have performed the first theoretical and experimental studies of the production of a femtosecond spectral supercontinuum in a deuterium-oxide (D₂O) jet. When pumped by laser pulses with an incoming central wavelength of 800 nm, width of 40 fs, and maximum intensity of 8.8×10¹³  W/cm², the supercontinuum spectrum generated in a 1.8-mm thick jet of deuterium oxide extended from 350 to 1700 nm (measured at the 0.1 level), which is 30% wider than the supercontinuum bandwidth previously observed under similar conditions in a hydrogen oxide (H₂O) jet. At a pulse intensity of 2.5×10¹²  W/cm², the deuterium-oxide supercontinuum had an intensity of 6.6×10¹¹  W/cm², for a conversion efficiency of 70%. Filamentation was observed in the pump radiation at an incoming intensity of 5.0×10¹²  W/cm², which is 1.5 times smaller than the filament formation intensity for hydrogen oxide.

© 2017 Optical Society of America

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