Generation of Controllable High Energy Nanosecond Flat-Top Waveform Based on Brillouin Amplification
| Autor: | Weiming He, Yi Chen, Zhiwei Lu, Yulei Wang, Zhaohong Liu, Rui-Qing Fan, Can Cui, Rui Liu, Xuehua Zhu |
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| Rok vydání: | 2016 |
| Předmět: |
Optical amplifier
Materials science business.industry Physics::Optics 02 engineering and technology Nanosecond 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Brillouin zone Optical pumping Optics law 0103 physical sciences Waveform Stimulated emission Electrical and Electronic Engineering 0210 nano-technology business Ultrashort pulse |
| Zdroj: | IEEE Photonics Technology Letters. 28:705-708 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2015.2505316 |
| Popis: | We propose a method based on Brillouin amplification, which reshapes the Gaussian pulse generated from a $Q$ -switched laser into the flat-top waveform. The numerical simulations show that the reshaped waveform depends on Stokes pulse width and energy, and optimum conditions for a flat waveform are also investigated. It is demonstrated experimentally by the independent two-cell filled with FC-40 liquid. In the experiment, the flat-top waveform pulses with width from 9.1 to 13.3 ns and continuously adjustable energy from 90 to 210 mJ are obtained at the wavelength of 1064 nm. The pulses with flat-top waveform and high energy are achieved by injecting a small Stokes seed into the Brillouin amplifier, which is a novel method to obtain high-energy flat-top laser pulses. |
| Databáze: | OpenAIRE |
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