A. Kowalevicz, T. Schibli, R. Prasankumar, F. Kaertner, J. Fujimoto
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We report the development of an ultralow-threshold modelocked Ti:Al/sub 2/O/sub 3/ laser. Since the pulse energy of a laser is given by its average power divided by its repetition rate, increasing the cavity length produces an increase in pulse energy. This increased pulse energy enables high performance KLM operation at low powers while also decreasing the spot size of the laser mode to reduce pump thresholds. We report what is, to our knowledge, the lowest threshold achieved to date for a Kerr lens mode locked Ti:Al/sub 2/O/sub 3/ laser.
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