Two Nd:YLF lasers with a pulse duration of about 2 ns have been synchronized. The duration and synchronization of two laser pulses are provided by two pairs of Pockels cells with synchronized voltage pulses. One of the Pockels cells in the first pair ensures Q switching, and the other cuts out a 2 ns pulse from the giant 20 ns pulse. In the second pair, one of the cells, driven by a two-step voltage pulse, forms a giant pulse synchronized with the pulse of the first laser, and the other cell cuts a short pulse out of it. The proposed scheme allows a rather simple and reliable synchronization of two Q-switched lasers with a jitter of 150 ps.
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Nonlinear optical response of strain-mediated gallium arsenide microwire in the near-infrared region.
Nanophotonics
May 2024
Shandong Engineering Research Center of New Optoelectronic Information Technology and Devices, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China.
Article Synopsis
- Gallium arsenide (GaAs) microwires, with an average diameter of 1.1 μm, have been successfully grown and show promise for nonlinear optical devices by allowing for bandgap engineering.
- The microwires exhibit significant strain, measured between 1.61% to 2.03%, which reduces their bandgap compared to bulk GaAs, extending the operational wavelength range to 1.1 μm.
- These GaAs microwires function as effective saturable absorbers in laser applications, demonstrating capabilities like Q-switching and mode-locking in Yb-bulk lasers, highlighting their potential for advanced optical technologies.
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