基于空间光调制器的QR二维码并行加工技术研究

Research on Parallel Processing Technology of QR Two-dimensional Code Based on Spatial Light Modulator

针对单光束激光加工QR二维码效率的不足,提出了基于空间光调制器的QR二维码并行加工方法。利用GS反馈算法生成了高均匀性的QR二维码多光束全息图,结合空间光调制器以及飞秒激光在不锈钢表面标刻出能被有效识别的QR二维码。研究了单脉冲能量、脉冲数量、离焦量以及光束均匀性对QR二维码加工质量的影响,通过试验得到了最优QR二维码并行加工工艺参数。

For improving the efficiency of single-beam laser processing QR code, a parallel processing method based on spatial light modulator is proposed. The GS algorithm is used to generate a two-dimensional code multi-beam hologram with high beam uniformity, combined with a spatial light modulator and femtosecond laser to mark a QR code that can be effectively identified on the stainless steel surface. The effects of single pulse energy, pulse number, defocus amount and beam uniformity on the processing quality of QR codes are studied, and the optimal parallel processing parameters of QR codes are obtained through experiments.