Abstract

We present what we believe to be the first terawatt diode-pumped laser employing single-crystalline Yb:CaF2 as the amplifying medium. A maximum pulse energy of 420mJ at a repetition rate of 1Hz was achieved by seeding with a stretched femtosecond pulse 2ns in duration, preamplified to 40mJ. After recompression, a pulse energy of 197mJ and a duration of 192fs were obtained, corresponding to a peak power of 1TW. Furthermore, nanosecond pulses containing an energy of up to 905mJ were generated without optical damage.

© 2008 Optical Society of America

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