Holographic solitons in centrosymmetric photorefractive dissipative systems

✍ Scribed by Kaiyun Zhan; Chunfeng Hou; Hao Tiao

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 286 KB
• Volume: 48
• Category: Article
• ISSN: 0143-8166
• DOI: 10.1016/j.optlaseng.2010.01.003

✦ Synopsis

It is shown theoretically that the signal beam alone can evolve into steady-state bright and dark holographic solitons in a centrosymmetric photorefractive dissipative system that includes two balances, i.e., loss is exactly compensated by gain and diffraction is compensated by nonlinearity resulting from both self-phase modulation self-focusing and holographic focusing. These solitons have fixed amplitude and width. When the absorption of the system is neglected and the pump beam is switched to a background light, these solitons can become the ''traditional'' photorefractive solitons with arbitrary amplitude.