Details

Autor(en) / Beteiligte

• Zhang, Jingdi
• Yu, Xuefeng
• Han, Weijia
• Lv, Bosai
• Li, Xiaohong
• Xiao, Si
• Gao, Yongli
• He, Jun

Titel

Broadband spatial self-phase modulation of black phosphorous

Ist Teil von

• Optics letters, 2016-04, Vol.41 (8), p.1704-1707

Ort / Verlag

United States

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Optica Publishing Group (OPG)

Beschreibungen/Notizen

• Spatial self-phase modulation (SSPM) experiments on two-dimensional (2D) black phosphorus (BP) nanoflake suspensions are performed with focused femtosecond pulsed lasers at 350-1160 nm. In the broadband region, the slope of the SSPM ring number versus laser intensity varies from 0.99 to 0.34, which is larger than 0.25 in MoS2. We deduce the portion of the fluid globe (ξ) to be 0.0067, which is a constant independent of laser intensity, when the laser intensity is above 10 W/cm2. The nonlinear refractive index of BP is measured to be ∼10(-5) cm2 W(-1), and the third-order nonlinear susceptibility is χ(3)∼10(-8) esu at multiple wavelengths.