Abstract
We report on a gigahertz self-mode-locked high-order Hermite–Gaussian (HG) laser. With a pump power of , the average output power for the modes from to are among at a repetition rate of . The mode-locked pulse width is in the range of for various HG modes. With a simple cylindrical-lens converter, the mode-locked HG beams are converted to generate picosecond optical vortex pulses.
© 2009 Optical Society of America
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