Variational solutions for Hermite-Gaussian solitons in nonlocal nonlinear media

• 来源期刊: 中国物理B（英文版）
• 关键词: nonlocal nonlinear media variational approach Hermite-Gaussian solitons
• 年，卷（期）: 2009,（7）
• 页码范围: 2853-2857
• 页数: 5页
• 语种: 英文

摘要

The physical features exhibited by Hermite-Gaussian (HG) beams propagating in nonlocal nonlinear media with Gaussian-shaped response are discussed with an approximate variational method. Using direct numerical simulations,we find that the beam properties in the normalized system are different with the change of the degree of nonlocality. It is shown that initial HG profiles break up into several individual beams with propagation when the degree of nonlocality α is small. HG beams can propagate stably when α is large enough.