Correction: Pereyra, P. Photonic Transmittance in Metallic and Left Handed Superlattices. Photonics 2020, 7, 29

The author wishes to make the following corrections to this paper [1]. On page 4, there are misprints in Equations (4)–(6) and (8). The incorrect equations are:

$$M_c=\frac{1}{2k_1{\mu }_{2}cos{\theta }_1}\left(\begin{array}{cc}{\alpha }_l& {\beta }_l\\ {\beta }_l& {\alpha }_l\end{array}\right)\left(\begin{array}{cc}{e}^{-p{d}_c+iq{d}_c}& 0\\ 0& e^{p{d}_c-iq{d}_c}\end{array}\right)\frac{1}{2\kappa {\mu }_{1}cos\psi }\left(\begin{array}{cc}{\alpha }_l& -{\beta }_l\\ -{\beta }_l& {\alpha }_l\end{array}\right),$$

(4)

where $p=\rho ({ϵ}_{R}sin\gamma +{ϵ}_{I}cos\gamma )$, $\kappa ={\left(q^2+k_1^2{sin}^2{\theta }_i\right)}^{1/2}$ and

$$\left(\begin{array}{cc}{\alpha }_l& {\beta }_l\\ {\beta }_l& {\alpha }_l\end{array}\right)=\left(\begin{array}{cc}{k}_1{\mu }_{2}cos\psi +\kappa {\mu }_{1}cos\psi & k_1{\mu }_{2}cos\psi -\kappa {\mu }_{1}cos\psi \\ k_1{\mu }_{2}cos\psi -\kappa {\mu }_{1}cos\psi & k_1{\mu }_{2}cos\psi +\kappa {\mu }_{1}cos\psi \end{array}\right).$$

(5)

with slab transfer matrix $M_c$

$$M_c=\left(\begin{array}{cc}{\alpha }_c& {\beta }_c\\ {\beta }_c& {\alpha }_c\end{array}\right).$$

(6)

and unit-cell transfer matrix

$$M=\left(\begin{array}{cc}\alpha & \beta \\ \beta & {\alpha }^{*}\end{array}\right)=\left(\begin{array}{cc}{e}^{i{k}_1{d}_{a}cos{\theta }_i}{\alpha }_c& {\beta }_c\\ {\beta }_c& e^{-i{k}_1{d}_{a}cos{\theta }_i}{\alpha }_c\end{array}\right).$$

(8)

The correct equations are

$$M_c=\frac{1}{2k_1{\mu }_{2}cos\psi +2\xi }\left(\begin{array}{cc}{\alpha }_l& {\beta }_l\\ {\beta }_l^{*}& {\alpha }_l^{*}\end{array}\right)\left(\begin{array}{cc}{e}^{i(q+ip)d_c}& 0\\ 0& e^{-i(q-ip)d_c}\end{array}\right)\frac{1}{2\kappa {\mu }_{1}cos{\theta }_i}\left(\begin{array}{cc}{\alpha }_l^{*}& -{\beta }_l\\ -{\beta }_l^{*}& {\alpha }_l\end{array}\right),$$

(4)

where $p=\rho ({ϵ}_{R}sin\gamma +{ϵ}_{I}cos\gamma )$, $\kappa ={\left(q^2+k_1^2{sin}^2{\theta }_i\right)}^{1/2}$, $\xi =k_1{\mu }_{2}sec{\theta }_{i}tan\psi$ and

$$\begin{array}{ccc}\hfill {\alpha }_l& =\hfill & \hfill k_1{\mu }_{2}sec{\theta }_i+\kappa {\mu }_{1}cos\psi +\xi +ip{\mu }_1\\ \hfill {\beta }_l& =\hfill & \hfill k_1{\mu }_{2}sec{\theta }_i-\kappa {\mu }_{1}cos\psi -\xi +ip{\mu }_1.\end{array}$$

(5)

with slab transfer matrix $M_c$

$$M_c=\left(\begin{array}{cc}{\alpha }_c& {\beta }_c\\ {\beta }_c^{*}& {\alpha }_c^{*}\end{array}\right).$$

(6)

and unit-cell transfer matrix

$$M=\left(\begin{array}{cc}\alpha & \beta \\ {\beta }^{*}& {\alpha }^{*}\end{array}\right)=\left(\begin{array}{cc}{e}^{i{k}_1{d}_{a}cos{\theta }_i}{\alpha }_c& {\beta }_c\\ {\beta }_c^{*}& e^{-i{k}_1{d}_{a}cos{\theta }_i}{\alpha }_c^{*}\end{array}\right).$$

(8)

The author confirms that the numerical calculations reported in the paper were done with the correct expressions, therefore the changes do not affect the results. The author apologizes for the inconveniences caused by these misprints.