Comments on “Optical properties of borate crystals in the terahertz domain”

We comment on the recent paper by V.D. Antsygin et al. [Opt. Commun. 309 (2013) 333–337], in which for the first time dispersions of refractive indices nx,z in lithium triborate (LBO) were presented for the THz domain. Their claim of “nx>nz”, based on measurements by THz time-domain spectroscopy...

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Bibliographic Details
Published in:Optics communications 2016-04, Vol.365, p.14-15
Main Authors: Svetlichnyi, V.A., Naftaly, M., Molloy, J.F., Andreev, Yu.M., Kokh, K.A., Lanskii, G.V., Kononova, N.G., Kokh, A.E.
Format: Article
Language:English
Subjects:
Absorption
Dispersion
Lithium triborate
Refractive index
Terahertz
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Summary:We comment on the recent paper by V.D. Antsygin et al. [Opt. Commun. 309 (2013) 333–337], in which for the first time dispersions of refractive indices nx,z in lithium triborate (LBO) were presented for the THz domain. Their claim of “nx>nz”, based on measurements by THz time-domain spectroscopy (TDS), is contrary to the well-known relationship for the maximum transparency region.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2015.11.046