Tailored excitation sequences for optimized laser-induced modifications in bulk transparent materials exposed to sub-ps irradiation
Tailored excitation sequences for optimized laser-induced modifications in bulk transparent materials exposed to sub-ps irradiation
复制标题
定制的激发序列，用于优化暴露于亚皮秒辐射的块状透明材料的激光诱导改性
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
I. Hertel
中科院分区：
文献类型：
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作者：
A. Mermillod;R. Stoian;M. Boyle;A. Rosenfeld;I. M. Burakov;N. Bulgakova;É. Audouard;I. Hertel
超短近红外激光脉冲在各种透明材料中的紧密聚焦通过局部改变材料的折射率而引起光学性质的显著改变。这种激光诱导相位物体是主要的技术兴趣，特别是直接写入嵌入式光学功能。虽然广泛的研究已经报道了超短脉冲激光在几种材料中引起的修改，特别是关于聚焦条件，孵化效果，或脉冲的能量含量的影响，我们在这里强调的作用的激发序列的时间设计。我们目前的相衬显微镜调查所得的形态和讨论的折射率拓扑图诱导不同的时间脉冲强度信封在各种透明材料。示出了由脉冲成形装置对相互作用区的形态产生的时间轮廓的后果，强调了激发时间轮廓和材料响应之间的同步的益处。
Tight focusing of ultrashort near infrared laser pulses in the bulk of various transparent materials induces significant modifications of the optical properties by locally changing the material refractive index. Such laser-induced phase objects are of major technological interest, notably for direct writing of embedded optical functions. While extensive studies have been reported on ultrashort pulsed laser induced modifications in several materials, especially with regard to focusing conditions, incubation effects, or the influence of the energy content of the pulse, we emphasize here the role of the temporal design of the excitation sequence. We present phase-contrast microscopy investigations of the resultant morphology and discuss the refractive index topological map induced by different temporal pulse intensity envelopes in various transparent materials. The consequences of temporal profiles generated by a pulse shaping apparatus on the morphology of the interaction zone are illustrated, emphasizing the benefits of the synchronization between the excitation temporal profile and the material response.