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Table 1 The TDDs, refractive index, and Raman E2(h) peak positions of AlN samples

From: Influence of Dislocations on the Refractive Index of AlN by Nanoscale Strain Field

Samples 1 2 3 4 5
Total TDDs (cm− 2) 3.48 × 109 8.27 × 108 6.15 × 108 5.86 × 108 4.24 × 108
Refractive index at 633 nm 2.0190 2.0249 2.0312 2.0436 2.0559
Refractive index at 365 nm 2.1001 2.1076 2.1131 2.1264 2.1405
Refractive index at 280 nm 2.2102 2.2175 2.2222 2.2366 2.2508
Position of E2(h) (cm−1) 657.56 661.12 662.88 663.20 663.49