The optical property of beta barium borate (Β-BBO) in the terahertz region (0.2-12 THz) was studied using a broadband air photonic terahertz time-domain spectrometer. The crystal orientation and frequency dependence of Β-BBO refractive index and absorption coefficient were experimentally investigated over the temperature range of 10-293 K. Four TO phonon modes were observed below 3.5 THz. The behavior of these phonon modes at different temperatures has been characterized. © 2008 American Institute of Physics.
CITATION STYLE
Liu, J., Guo, X., Dai, J., & Zhang, X. C. (2008). Optical property of beta barium borate in terahertz region. Applied Physics Letters, 93(17). https://doi.org/10.1063/1.3009964
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