“The excitation source used was an argon-ion laser-pumped, regeneratively amplified Ti-sapphire laser operating at 250 kHz repetition rate.”

“Laser pulses of 100 fs full-width at half-maximum at 790 nm, 800 mW power, and 1 kHz repetition rate were generated from a regeneratively amplified Ti-S system.”

“In a typical engine-expander cycle, the fuel alone regeneratively cools the combustion chamber and nozzle.”