In the original article,1 the x-axis of Fig. 1 was mislabeled as “Frequency (THz)” when it should have been labeled “Intersubband gain (cm−1).” The correct Fig. 1 is shown below.

FIG. 1.

Simulated peak reflectance for a ridge-based (Λ = 50 μm, w =8.3 μm) and patch-based (Λ = 47 μm, w =11.45 μm, L =7.5 μm) metasurface design for a 10 μm thick 4.7 THz active region. Insets show field distribution for the two cases (note: relative strength of fields between the patch and ridge are not to scale).

FIG. 1.

Simulated peak reflectance for a ridge-based (Λ = 50 μm, w =8.3 μm) and patch-based (Λ = 47 μm, w =11.45 μm, L =7.5 μm) metasurface design for a 10 μm thick 4.7 THz active region. Insets show field distribution for the two cases (note: relative strength of fields between the patch and ridge are not to scale).

Close modal
1.
C. A.
Curwen
,
J. L.
Reno
, and
B. S.
Williams
,
Appl. Phys. Lett.
116
(
24
),
241103
(
2020
).