dorsal/arxiv
View SchemaCompensation of nonlinear phase shifts with third-order dispersion: fiber stretchers can out-perform grating stretchers in short-pulse fiber amplifiers
| Authors | Shian Zhou, Lyuba Kuznetsova, Andy Chong, Frank W. Wise |
|---|---|
| Categories | |
| ArXiv ID | physics/0504052 |
| URL | https://arxiv.org/abs/physics/0504052 |
Abstract
We show that nonlinear phase shifts and third-order dispersion can compensate each other in short-pulse fiber amplifiers. In particular, we consider chirped-pulse fiber amplifiers at wavelengths for which the fiber dispersion is normal. The nonlinear phase shift accumulated in the amplifier can be compensated by the third-order dispersion of the combination of a fiber stretcher and grating compressor. A numerical model is used to predict the compensation, and initial experimental results that exhibit the main features of the calculations are presented. In the presence of third-order dispersion, an optimal nonlinear phase shift reduces the pulse duration, and enhances the peak power and pulse contrast compared to the pulse produced in linear propagation. Contrary to common belief, fiber stretchers can perform as well or better than grating stretchers in fiber amplifiers, while offering the major practical advantages of a waveguide medium. The relative benefits of a fiber stretcher increase with increasing pulse energy, so the results presented here will be relevant to fiber amplifiers designed for the highest pulse energies.
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"abstract": "We show that nonlinear phase shifts and third-order dispersion can compensate\neach other in short-pulse fiber amplifiers. In particular, we consider\nchirped-pulse fiber amplifiers at wavelengths for which the fiber dispersion is\nnormal. The nonlinear phase shift accumulated in the amplifier can be\ncompensated by the third-order dispersion of the combination of a fiber\nstretcher and grating compressor. A numerical model is used to predict the\ncompensation, and initial experimental results that exhibit the main features\nof the calculations are presented. In the presence of third-order dispersion,\nan optimal nonlinear phase shift reduces the pulse duration, and enhances the\npeak power and pulse contrast compared to the pulse produced in linear\npropagation. Contrary to common belief, fiber stretchers can perform as well or\nbetter than grating stretchers in fiber amplifiers, while offering the major\npractical advantages of a waveguide medium. The relative benefits of a fiber\nstretcher increase with increasing pulse energy, so the results presented here\nwill be relevant to fiber amplifiers designed for the highest pulse energies.",
"arxiv_id": "physics/0504052",
"authors": [
"Shian Zhou",
"Lyuba Kuznetsova",
"Andy Chong",
"Frank W. Wise"
],
"categories": [
"physics.optics"
],
"title": "Compensation of nonlinear phase shifts with third-order dispersion: fiber stretchers can out-perform grating stretchers in short-pulse fiber amplifiers",
"url": "https://arxiv.org/abs/physics/0504052"
},
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