Kramers–Kronig Relations in Representation of Modulation Polarimetry by an Example of the Transmission Spectra of GaAs Crystal
- 作者: Matyash I.E.1, Minailova I.A.1, Mishchuk O.N.1, Serdega B.K.1
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隶属关系:
- Lashkaryov Institute of Semiconductor Physics
- 期: 卷 123, 编号 6 (2017)
- 页面: 881-888
- 栏目: Condensed-Matter Spectroscopy
- URL: https://bakhtiniada.ru/0030-400X/article/view/165586
- DOI: https://doi.org/10.1134/S0030400X17120098
- ID: 165586
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详细
The increments of the real and imaginary components of the complex refractive index ΔN = Δn–iΔk of a lightly doped GaAs crystal with a donor concentration of ~1016 cm–3 have been measured using modulation polarimetry. It is shown that, within this representation, the birefringence and dichroism spectra (Δn(ω) and Δk(ω), respectively) obtained in the transparency window of a sample subjected to probe strain are derivatives of the corresponding functions: Δn(ω) ≈ dn/dω and Δk(ω) ≈ dk/dω. The experimental characteristics and primary dependences n(ω) and k(ω) derived from them by graphical integration are in agreement with the results of other researchers and measurements carried out by independent methods. The results obtained are compared (taking into account the integral (Kramers–Kronig) relations) with the resonance parameters: amplitude and phase in the Drude–Lorenz model. Agreement between the experimental characteristics and theoretical model predictions can be obtained by choosing an appropriate value of resonance damping parameter.
作者简介
I. Matyash
Lashkaryov Institute of Semiconductor Physics
Email: irinaminailova125@gmail.com
乌克兰, Kyiv, 03028
I. Minailova
Lashkaryov Institute of Semiconductor Physics
编辑信件的主要联系方式.
Email: irinaminailova125@gmail.com
乌克兰, Kyiv, 03028
O. Mishchuk
Lashkaryov Institute of Semiconductor Physics
Email: irinaminailova125@gmail.com
乌克兰, Kyiv, 03028
B. Serdega
Lashkaryov Institute of Semiconductor Physics
Email: irinaminailova125@gmail.com
乌克兰, Kyiv, 03028
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