Abstract The communication presents a study concerning the azo-polymer response to the pulse laser irradiation, in the context of the surface relief gratings (SRGs) inscription. We used the different energy density of the laser beam (10 and 45 mJ/cm2) and their number of pulses (10 and 100) to observe the influence of the irradiation conditions on the amplitude of SRGs. The modulation of the polymer surface up to 440 nm was obtained. It was showed that key factors decided about polymer surface modulation depth, except irradiation conditions, are the azodye content in the polymer repeating units and flexibility of the polymer backbone. Moreover, unexpected effect of polymer molar masses on the SRG amplitudes was observed. The beneficial effect of higher polymer molar masses on SRGs formed using the stronger power of irradiation beam was found.

中文翻译：

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脉冲激光辐照诱导偶氮聚酰亚胺表面浮雕光栅

摘要 该通讯在表面浮雕光栅 (SRG) 铭文的背景下，对偶氮聚合物对脉冲激光照射的响应进行了研究。我们使用不同能量密度的激光束（10 和 45 mJ/cm2）及其脉冲数（10 和 100）来观察辐照条件对 SRG 振幅的影响。聚合物表面的调制达到 440 nm。结果表明，除辐照条件外，决定聚合物表面调制深度的关键因素是聚合物重复单元中的偶氮染料含量和聚合物骨架的柔韧性。此外，观察到聚合物摩尔质量对 SRG 振幅的意外影响。发现较高的聚合物摩尔质量对使用更强的辐射束功率形成的 SRG 的有益影响。