Cheng G, Mishchik K, Mauclair C, Audouard E, Stoian R
Laboratoire Hubert Curien, UMR 5516 CNRS, Université Jean Monnet, 42000 Saint Etienne, Université de Lyon, 42023 Saint Etienne, France.
Opt Express. 2009 Jun 8;17(12):9515-25. doi: 10.1364/oe.17.009515.
Ultrashort pulsed laser irradiation of bulk fused silica may result under specific energetic conditions in the self-organization of subwavelength material redistribution regions within the laser trace. The modulated structures have birefringent properties and show unusual anisotropic light scattering and reflection characteristics. We report here on the formation of waveguiding structures with remarkable polarization effects for infrared light. The photoinscription process using 800 nm femtosecond laser pulses is accompanied by third harmonic generation and polarization dependent anisotropic scattering of UV photons. The photowritten structures can be arranged in three-dimensional patterns generating complex propagation and polarization effects due to the anisotropic optical properties.
在特定能量条件下，对块状熔融石英进行超短脉冲激光辐照可能会导致激光轨迹内亚波长材料再分布区域的自组织。这些调制结构具有双折射特性，并表现出异常的各向异性光散射和反射特性。我们在此报告具有显著红外光偏振效应的波导结构的形成。使用800纳米飞秒激光脉冲的光写入过程伴随着三次谐波产生以及紫外光子的偏振相关各向异性散射。由于各向异性光学特性，光写入结构可以排列成三维图案，产生复杂的传播和偏振效应。
