Spectra-Physics, a division of Newport, offers the Spitfire Pro XP and the Spitfire Pro 5W ultrafast amplifiers for amplifying femtosecond oscillators. Both versions use a patented one-Pockels-cell regenerative cavity design. The Pro XP uses chirped-pulse and regenerative amplification and generates sub-35-fs pulses in a near TEM00 near-transform-limited output beam with more than 3 mJ at 1 kHz. The Pro 5W combines a regenerative cavity and a multipass amplification stage for higher energy with maximum beam quality. It generates sub-40-fs, sub-120-fs or picosecond pulses.