期刊
QUANTUM ELECTRONICS
卷 48, 期 1, 页码 19-21出版社
TURPION LTD
DOI: 10.1070/QEL16515
关键词
lithium borate crystal; LBO; THz radiation; absorption coefficient; refractive index
资金
- Russian Science Foundation [1519-10021]
The anisotropy of optical properties of nonlinear lithium borate (LBO) crystals in the range of 0.2 - 2 THz is investigated by time-domain THz spectroscopy at room temperature and at T = 81 K. It is shown that the birefringence dramatically decreases upon cooling, as a result of which phase-matching conditions cannot be implemented. At the same time, the absorption coefficients a(x) and a(y) are found to decrease significantly with decreasing temperature, due to which the LBO crystal becomes a promising material for generating THz radiation via optical rectification and fabricating periodic structures and optical elements.
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