Abstract

Third-harmonic generation of high-intensity, sub-$100\text{-}\mathrm{fs}$ idler pulses from a Ti:sapphire-laser-pumped optical parametric amplifier is demonstrated by using a single nonlinear crystal of ${\mathrm{BiB}}_3{\mathrm{O}}_6$ (BIBO). Maximum internal energy conversion as high as 11% from the fundamental to the third harmonic is achieved by phase- and group-velocity matching for the direct cubic nonlinear process together with the velocity-mismatched cascading quadratic processes.

© 2011 Optical Society of America

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