A previous paper [Appl. Opt. 52, 6364 (2013) [CrossRef]  ] presented experimental work on the stress-optical effect in the terahertz frequency range. Although the theoretical model of experimental measurement is correct, there are two errors in the original version. As a result, the presented experimentally measured value of the refractive index-stress coefficient A of polytetrafluoroethylene (PTFE) is erroneous. This erratum points out the errors in the original paper and reports the correct values.

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  1. L. A. Li, W. Song, Z. Y. Wang, S. B. Wang, M. X. He, J. G. Han, and L. Q. Cong, “Active modulation of refractive index by stress in the terahertz frequency range,” Appl. Opt. 52, 6364–6368 (2013).

2013 (1)

Cong, L. Q.

Han, J. G.

He, M. X.

Li, L. A.

Song, W.

Wang, S. B.

Wang, Z. Y.

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Figures (1)

Fig. 1.
Fig. 1. Values of ΔN under different stresses.

Tables (1)

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Table 1. Refractive Index-Stress Coefficient of Experiments

Equations (2)

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δ d = 2 π f ( N 0 1 ) Δ d c ,
Δ N = c 2 π d Δ δ f + ( N 0 1 ) μ σ E .