Open AccessInvestigation of the antiphase dynamics of the orthogonally polarized passively Q-switched Nd:YLF laser
Author(s) -
H. C. Liang,
Dong-Lin Li,
E. H. Lin,
Chao-Kuei Hsu,
Hua Lin
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.026590
Subject(s) - optics , polarization (electrochemistry) , laser , q switching , anisotropy , materials science , linear polarization , pulse width modulation , pulse (music) , crystal (programming language) , physics , power (physics) , chemistry , quantum mechanics , detector , computer science , programming language
The antiphase dynamics of Q-switched orthogonally polarized emissions have been thoroughly investigated. A Nd:YLF crystal with the anisotropic thermal lensing effect is used as the gain medium for achieving dual polarized laser. By using the Cr 4+ :YAG saturable absorber, the passively Q-switched output shows intriguing switching dynamics, where the number of pulses for both polarized components within one switching period is directly determined by the power ratio between the orthogonally polarized emissions. Experimental results reveal that the pulse energies of every single pulse for both orthogonally polarized states are equal with the maximum value of 223 μJ. The pulse durations for π- and σ-polarization are measured to be 15 ns and 11 ns and the corresponding peak power levels are up to 15.0 kW and 20.3 kW, respectively.