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物理学报. 2004, 53(9): 3033-3041.
doi: 10.7498/aps.53.3033.
复色光伏孤子的稳定性
- 收稿日期: 2003-08-04
- 修回日期: 2003-10-13
- 刊出日期: 2004-09-16
English Abstract
Stability of photovotaic spatial soliton with two-wavelength components
- Received Date:
04 August 2003
- Accepted Date:
13 October 2003
- Published Online:
16 September 2004
Abstract: An approximate method is presented to calculate the full width at half maximum(F WHM) of photovoltaic(PV) spatial solitons(PVSSs) with twowavelengths component . An advanced numerical analysis i ndicates that two coaxial hyperbolic secant beams, provided that they satisfy th e functional relations of FWHM with amplitudes of this type of PVSS, will be ver y close to solitons when they propagate in PV crystals. Besides, this type of PV S S tends to be stable against small axial perturbations and small refractive inde x perturbations due to variations of temperature of the crystal. However, if the pro files of intensity of two coaxial signal beams with different wavelengths diff e r mildly from those of PVSS, the two beams will tend to experience cycles of co mpression and expansion; and if the profiles of intensity of the signal beams di ffer significantly from those of PVSS, these two signal beams will diffuse endle ssly.
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