Abstract.
We report stable self-starting near-transform-limited 26-fs pulses at 250-mW output power from a Kerr-lens mode-locked (KLM) Cr4+:YAG laser using chirped mirrors in combination with prisms. The highest output power achieved in KLM regime was 600 mW at 55-fs pulse duration. The experimental results agree well with the results of theoretical analysis with respect to KLM self-starting ability and stability against continuous-wave and multi-pulse operation. Parameter ranges for stable transform-limited KLM pulses as well as the shortest achievable pulse durations are established. Using an InGaAs-InP semiconductor saturable absorber mirror we could obtain self-starting 57-fs pulses at the average output power of 200 mW. Two-photon absorption was found to be the main mechanism favoring the multiple-pulse operation.
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Received: 2 May 2002 / Revised version: 16 July 2002 / Published online: 8 January 2003
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Naumov, S., Sorokin, E., Kalashnikov, V. et al. Self-starting five optical cycle pulse generation in Cr4+:YAG laser . Appl Phys B 76, 1–11 (2003). https://doi.org/10.1007/s00340-002-1022-5
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DOI: https://doi.org/10.1007/s00340-002-1022-5