Figure 4.

Room temperature linearly polarized photoluminescence spectra split into TE and TM modes for QR35 samples. The samples were grown using As4(a, c) and As2(b, d) sources. PL spectra are normalized to the most intense peak of the GS transitions in the InGaAs QRs. Circles indicate the optical anisotropy, represented by the degree of polarization, DOP.

Nedzinskas et al. Nanoscale Research Letters 2012 7:609   doi:10.1186/1556-276X-7-609
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