Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.
Opt Lett. 2009 Dec 15;34(24):3842-4. doi: 10.1364/OL.34.003842.
We report on a gigahertz self-mode-locked high-order Hermite-Gaussian (HG) Nd:GdVO(4) laser. With a pump power of 2.2 W, the average output power for the TEM(0,m) modes from m=9 to m=0 are among 350-780 mW at a repetition rate of 3.5 GHz. The mode-locked pulse width is in the range of 20-25 ps for various HG TEM(0,m) modes. With a simple cylindrical-lens converter, the mode-locked HG beams are converted to generate picosecond optical vortex pulses.
我们报告了一种千兆赫兹自锁模高阶厄米-高斯（HG）Nd：GdVO（4）激光。在 2.2 W 的泵浦功率下，从 m=9 到 m=0 的 TEM（0，m）模式的平均输出功率在 3.5 GHz 的重复率下为 350-780 mW。各种 HG TEM（0，m）模式的锁模脉冲宽度在 20-25 ps 范围内。通过简单的圆柱透镜转换器，可以将锁模 HG 光束转换为产生皮秒光涡旋脉冲。
