Abstract
We report a stable optical fiber pumped Nd:YVO4 all solid state regenerative amplifier with all fiber picosecond laser as seed source. 888 nm Yb optical fiber lasers was chosen as pump source to reduce quantum defect for improved thermal performance. At the repetition rate of 99.6 kHz, maximum power of 19.63 W with 36 ps pulse duration were achieved when seeded by a 150 mW picosecond oscillator. The wavelength delivered was 1064.07 nm with spectral width of 0.14 nm.
Highlights
Picosecond lasers with compact structure, lightweight and high stability are in demand for a number of applications, such as laser satellite ranging (SLR), precision machining, biology, spectroscopy, and military science [1–5]
All fiber picosecond laser has the characteristics of miniaturization and lightweight, the peak power of all fiber laser operating in the picosecond regime is limited to the nano-Joule level due to the strong nonlinear effect in high peak power operation
Due to the poor thermal and mechanical properties of Nd:YVO4, a large temperature gradient will be generated inside the crystal at high power pumping
Summary
Picosecond lasers with compact structure, lightweight and high stability are in demand for a number of applications, such as laser satellite ranging (SLR), precision machining, biology, spectroscopy, and military science [1–5]. Sci. 2015, 5 stable high peak power regenerative amplifier output, a good way is to combine the fiber picosecond seed source with all solid state regenerative amplification technology [6–8]. In order to obtain high peak power regenerative amplified output at high repetition rate, we need to improve the injected pumping power as well as the pump absorption efficiency. We develop a high power and high repetition rate all solid state Nd:YVO4 picosecond regenerative amplifier by using all optical fiber picosecond laser as seed source and 888 nm laser as pumping source. This is the highest power has been generated from an optical fiber end pumped all solid-state picosecond regenerative amplifier at ~100 kHz repetition rates
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