All-space existence and dispersion of athermal directions in monoclinic KY(WO4)2

OPTICS COMMUNICATIONS

卷:326

Article

Loiko, P. A.¹  Filippov, V. V.²  Kuleshov, N. V.¹  Pavlyuk, A. A.³  Yumashev, K. V.¹ 

[1] Belarusian Natl Tech Univ, Ctr Opt Mat & Technol, Minsk 220013, BELARUS

[2] Natl Acad Sci Belarus, BI Stepanov Phys Inst, Minsk 220072, BELARUS

[3] Russian Acad Sci, Siberian Branch, AV Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

关键词: Double tungstates;    Athermal behavior;    Dispersion;    Optical axis;   

DOI  :  10.1016/j.optcom.2014.04.038

来源: Elsevier

【 摘 要 】

The analytical expressions for thermo-optic coefficients, dn/dT, for fast and slow light waves propagating along the arbitrary direction in a biaxial crystal are derived. On the basis of these expressions, the all-space analysis of existence of athermal directions is performed for monoclinic and biaxial KY(WO4)(2) at 1.03 mu m. The calculations are performed for an arbitrary light propagation direction and polarization (not restricted to the principal planes). The appearance of directions that can be athermal for both fast and slow waves is predicted. The dispersion of athermal directions is analyzed for visible and near-IR. The existence of upper and lower dispersion limits for athermal behavior of KY (WO4)(2) is shown. It is shown that the optical indicatrix axes can be athermal itself at some light wavelengths. Wavelength- and temperature-dependent position of the optical axes of KY(WO4)(2) is also determined. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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