Archive > Volume 13 Issue 3 > 2017,13(3):188-191. DOI:10.1007/s11801-017-7009-6 CSTR:[cstr] Prev Next
Generation of picosecond vortex beam in a self-mode-locked Nd:YVO4 laser
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Abstract:
In this paper, a self-mode-locked Nd:YVO4 picosecond vortex laser is demonstrated, which can operate on the different Laguerre-Gaussian (LG) modes at 1 064 nm. A π/2 mode converter is utilized to realize the picosecond vortex laser with LG mode transformed from the high-order Hermite-Gaussian (HG) mode. For the proposed laser, the mode-locked pulse repetition rate is 1.81 GHz. The average output powers of LG12 mode and LG02 mode are 1.241 W and 1.27 W, respectively, and their slope efficiencies are 23.2% and 24%, respectively. Keywords:
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