Amplification of femtosecond pulses in Ti:Al(2)O(3) using an injection-seeded laser

A 440-fsec, 0.1-pJ pulse from a dye laser is injected into a high-repetition-rate Ti:Al(2)O(3) laser pumped by a copper-vapor laser to study the amplification and pulse broadening of femtosecond pulses in Ti:Al(2)O(3). Gains of 2 x 10(7) are achieved with output pulse durations of 1.1 psec. After recompression with a grating pair to compensate dispersion broadening, pulses as short as 275 fsec are obtained.