Orientation of single crystal with high-accuracy polarimeter

Kushnir, O. S.; Vlokh, O. G.

doi:10.1117/12.226135

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…Generally one finds that axes of dominant dichroism and birifrigence have to be nonaligned so that this kind of asymmetry may be most apparent in very anisotropic materials at frequencies of strong absorption. Wave propagation of polarized light, but not the explicit symmetry properties, in crystals with nonorthogonal eigenpolarizations has been investigated previously [66][67][68][69] . Non-reciprocity of this kind has been also called eigenwave non-reciprocity in the literature and identified with a TRS breaking of a certain fashion 70 .…”

Section: Time-reversal and Reciprocitymentioning

confidence: 99%

Constraints on Jones transmission matrices from time-reversal invariance and discrete spatial symmetries

Armitage

2014

Phys. Rev. B

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Optical spectroscopies are most often used to probe dynamical correlations in materials, but they are also a probe of symmetry. Polarization anisotropies are of course sensitive to structural anisotropies, but have been much less used as a probe of more exotic symmetry breakings in ordered states. In this paper a Jones transfer matrix formalism is discussed to infer the existence of exotic broken symmetry states of matter from their electrodynamic response for a full complement of possible broken symmetries including reflection, rotation, rotation-reflection, inversion, and timereversal. A specific condition to distinguish the case of macroscopic time-reversal symmetry breaking is particularly important as in a dynamical experiment like optics, one must distinguish reciprocity from time-reversal symmetry as dissipation violates strict time-reversal symmetry of an experiment. Different forms of reciprocity can be distinguished, but only one is a sufficient (but not necessary) condition for macroscopic time-reversal symmetry breaking. I show the constraints that a Jones matrix develops under the presence or absence of such symmetries. These constraints typically appear in the form of an algebra relating matrix elements or overall constraints (transposition, unitarity, hermiticity, normality, etc.) on the form of the Jones matrix. I work out a number of examples including the trivial case of a ferromagnet, and the less trivial cases of magnetoelectrics and vector and scalar spin "chiral" states. I show that the formalism can be used to demonstrate that Kerr rotation must be absent in time-reversal symmetric chiral materials. The formalism here is discussed with an eye towards its use in time-domain THz spectroscopy in transmission, but with small modifications it is more generally applicable.

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Section: Time-reversal and Reciprocitymentioning

confidence: 99%

Constraints on Jones transmission matrices from time-reversal invariance and discrete spatial symmetries

Armitage

2014

Phys. Rev. B

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Simultaneous measurements of crystal optical characteristics of deuterated triglycine sulphate

Kushnir¹

2003

Physica Status Solidi (b)

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The birefringence, rotation angle of the optical indicatrix and the gyration along the polar direction are studied in the paraelectric and ferroelectric phases of deuterated triglycine sulphate crystals using the HAUP-type universal null-polarimetric technique. The gyration effect in the multidomain ferroelectric phase is found to be negligibly small, in accordance with the symmetry considerations, while the changes in the birefringence and the indicatrix rotation occurring in the course of the phase transition may be described by electrooptical coupling due to the quadratic spontaneous effect.

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<title>Null-polarimetric studies of waveplate parameters</title>

Kushnir

Vlokh

1997

SPIE Proceedings

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Orientation of single crystal with high-accuracy polarimeter

Cited by 3 publications

References 6 publications

Constraints on Jones transmission matrices from time-reversal invariance and discrete spatial symmetries

Constraints on Jones transmission matrices from time-reversal invariance and discrete spatial symmetries

Simultaneous measurements of crystal optical characteristics of deuterated triglycine sulphate

<title>Null-polarimetric studies of waveplate parameters</title>

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