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| Titel: |
Stimulated four-photon mixing and efficient polychromatic visible light generation in SiO2-based single-mode optical fibers pumped at 1.319 μm |
| Auteur: |
Reis, Ana M. Vermelho, Marcos V. D. Nicacio, Dario L. Gouveia, Evandro A. Gouveia-neto, Artur S. |
| Verschenen in: |
Fiber & integrated optics |
| Paginering: | Jaargang 14 (1995) nr. 2 pagina's 179-193 |
| Jaar: |
1995 |
| Inhoud: |
The generation of near-infrared and intense visible light through stimulated multi-wave mixing processes in single-mode silica-based optical fibers pumped by a Q-switched and mode-locked Nd:YAG laser operated at 1.319 μm is described. The experimental results show that intense infrared light around 1.2 μm is produced via selp-hase-matched four-photon mixing at the minimum group velocity dispersion region of pure SiO2-core and P2O5-doped silica fibers. In the visible spectral region, from 580 nm to 600 nm, 20 W peak power 100-ps pulses were generated by pumping single spans of single-mode P2O5-doped and undoped SiO2-core fibers with 1.319-μm laser pulses. The signal light generated in such fibers propagated in the LP02 fiber mode and exhibited a threshold power that depended upon the fiber length and a critical length that was power dependent. Also, it exhibited an asymmetrical spectrum of a few nanometers bandwidth, with a long tail toward high frequencies. For GeO2-doped silica-based fibers, a multiple-wavelength visible signal propagating in several high-order fiber modes was generated. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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