title: High-power nanosecond ytterbium-doped fiber laser passively synchronized with a femtosecond Ti:sapphire laser.
abstract: We report on laser synchronization between a high-power nanosecond fiber laser and an ultrashort Ti:sapphire laser by cross-absorption modulation and power amplification. The nanosecond pulses were generated by a long-cavity ytterbium-doped fiber laser that was passively synchronized to a 70 fs Ti:sapphire laser with a remarkable cavity mismatch tolerance of about 8 cm as a result of resonance-enhanced cross-absorption modulation in additional rare-earth-doped fiber. By using a two-stage Yb-doped fiber preamplifier and a two-stage double-clad fiber power amplifier in cascade, the synchronized nanosecond pulses were amplified to 131 W of average power, corresponding to 0.55 mJ of single-pulse energy at a repetition rate of 240 KHz, with a timing jitter of 13 ps.
authors.affiliation: State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Yan
authors.forename: Wenxue
authors.initials: W
authors.lastname: Li
authors.forename: Qiang
authors.initials: Q
authors.lastname: Hao
authors.forename: Yao
authors.initials: Y
authors.lastname: Li
authors.forename: Kangwen
authors.initials: K
authors.lastname: Yang
authors.forename: Hui
authors.initials: H
authors.lastname: Zhou
authors.forename: Heping
authors.initials: H
authors.lastname: Zeng