Journal
OPTICS EXPRESS
Volume 14, Issue 11, Pages 4898-4907Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.14.004898
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The indices of refraction, extinction constants and complex conductivities of the GaN film for frequencies ranging from 0.2 to 2.5 THz are obtained using THz time-domain spectroscopy. The results correspond well with the Kohlrausch stretched exponential model. Using the Kohlrausch model fit not only provides the mobility of the free carriers in the GaN film, but also estimates the relaxation time distribution function and average relaxation time. (c) 2006 Optical Society of America.
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