Laser-Stimulated Enhancement of the Reflectance of Single-Crystalline n-GaAs(100)
DOI:
https://doi.org/10.15407/ujpe62.11.0953Keywords:
n-GaAs(100), laser irradiation, reflection spectra, refractive index, near-surface layerAbstract
The results of optical researches concerning the reflection spectra of n-GaAs(100) single crystals with a specific resistance of 10 Ωcm (at room temperature) measured in a light wave-length interval of 0.2–1.7 мm before and after the laser irradiation to an energy dose of 66–108 mJ/cm2 are reported. The experiment revealed a growth in the reflectance of the examined crystals after their laser treatment. This integral effect is explained as a result of the difference between the optical characteristics (the complex refractive index) in the near-surface layer and in the bulk of the irradiated material.
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