Picosecond optical vortex converted from multigigahertz self-mode-locked high-order Hermite-Gaussian Nd:GdVO(4) lasers

H C Liang; Y J Huang; Y C Lin; T H Lu; Y F Chen; K F Huang

doi:10.1364/OL.34.003842

Picosecond optical vortex converted from multigigahertz self-mode-locked high-order Hermite-Gaussian Nd:GdVO(4) lasers

Opt Lett. 2009 Dec 15;34(24):3842-4. doi: 10.1364/OL.34.003842.

Authors

H C Liang¹, Y J Huang, Y C Lin, T H Lu, Y F Chen, K F Huang

Affiliation

¹ Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.

PMID: 20016632
DOI: 10.1364/OL.34.003842

Abstract

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.