Properties, Processing and Applications of Indium Phosphide

Chapter 5: Optical Properties

5.1 Refractive Index of InP as a Function of Photon Energy

A.R. Forouhi and I. Bloomer
This Datareview appeared in Properties of Indium Phosphide (INSPEC, IEE, London, UK, 1991) and is reproduced here for the reader's convenience.

Room temperature n and k data of InP at photon energies in the static-IR, reststrahlen, transparent, bandgap, and visible-UV regions, have been determined by different investigators. In the 0.00124 to 0.0186 eV (static-IR) range, k ? 0. Also, in the 0.1127 to 1.2651 eV (transparent) range, k ? 0, but exact values of k are very sensitive to extrinsic parameters such as doping. At certain energies, more than one set of values of n and k, reported by different authors, are presented. The discrepancies between these different sets requires further investigation. At certain other energies, values of n or k are denoted by the '-' symbol. In such cases, interpolation of the closest given values for the optical constants may be used.

Table 1

Energy (eV)

Wavelength ( ?m)

n

k

0.00124

1000.0

3.522

[1]

0.00248

500.0

3.523

0.00496

250.0

3.529

0.00744

166.7

3.538

0.00992

125.0

3.551

0.01240

100.0

3.57

0.01860

66.67

3.65

0.02790

44.48

3.35

[1, 2]

0.214

[1, 2]

0.02827

43.86

3.39

0.234

0.02864

43.29

3.39

0.234

0.02901

42.74

3.40

0.288

0.02938

42.19

3.43

0.302

0.02976

41.67

3.43

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