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使用柱坐标的传输矩阵法计算并分析了在反谐振反射光波导(ARROW)型垂直腔面发射激光器(VCSEL)中,不同的第一包裹层厚度对应的基模和一阶横模的侧向辐射损耗。与传统平板近似的方法相比,该方法更为精确地计算出了损耗的值,同时更为详细地表明了损耗随第一包裹层厚度变化的规律。并且指出第一包裹层的最佳厚度并不一定是传统认为的使基模得到反谐振效果即侧向辐射损耗最小时的值,而需要综合考虑基模和一阶模的侧向损耗。这对ARROW型VCSEL的设计具有重要的指导意义。
The transmission matrix method with cylindrical coordinates was used to calculate and analyze the fundamental modes corresponding to the first cladding thickness and the first lateral modes in the ARROW vertical cavity surface emitting laser (VCSEL) Radiation loss. Compared with the traditional plate approximation method, this method can calculate the loss value more accurately and at the same time shows the law of the loss with the thickness of the first coating layer in more detail. And it is pointed out that the optimal thickness of the first coating is not necessarily the value of the traditional anti-resonance effect of the fundamental mode, that is, the minimum lateral radiation loss, and the lateral losses of the fundamental mode and the first-order mode need to be considered synthetically. This is an important guide for the design of the ARROW VCSEL.