CRYSTALLINE MATERIALS Introduction Physical Properties Optical Properties Mechanical Properties Thermal Properties Magnetooptic Properties Electrooptic Properties Elastooptic Properties Nonlinear Optical Properties GLASSES Introduction Commercial Optical Glasses Specialty Optical Glasses Fused Silica Fluoride Glasses Chalcogenide Glasses Magnetooptic Properties Electrooptic Properties Elastooptic Properties Nonlinear Optical Properties Special Glasses POLYMERIC MATERIALS Optical Plastics Index of Refraction Nonlinear Optical Properties Thermal Properties Engineering Data METALS Physical Properties of Selected Metals Optical Properties Mechanical Properties Thermal Properties Mirror Substrate Materials LIQUIDS Introduction Water Physical Properties of Selected Liquids Index of Refraction Nonlinear Optical Properties Magnetooptic Properties Commercial Optical Liquids GASES Introduction Physical Properties of Selected Gases Index of Refraction Nonlinear Optical Properties Magnetooptic Properties Atomic Resonance Filters APPENDICES Safe Handling of Optical Materials Abbreviations, Acronyms, and Mineralogical or Common Names for Optical Materials Abbreviations for Methods of Preparing Optical Materials and Thin Films Fundamental Physical Constants Units and Conversion Factors

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Handbook of Optical Materials

Nonlinear optical materials

a phenomenon that is not yet fully understood theoretically and has been studied only slightly, and which has a number of distinctive properties as being the strongest manifestation of spatial dispersion. The conclusions of the phenomenological macroscopic theory and their agreement with experiment are discussed briefly. The best-suited substances are summarized, and the nature of the propagation of light waves in crystals is described. A microscopic treatment of the problem is presented with a number of examples of the beststudied crystals. The extent of agreement between theory and experiment, the relation of the gyrotropy to the crystal structure and of its constituent elements to the energy levels (electronic, vibronic, and vibrational) and to exciton effects are analyzed. Molecular, ionic, and covalent crystals and semiconductors are discussed; magnetoelectric media and liquid crystals are covered. Studies published up to the beginning of 1974 are used.

Experimental studies of gyrotropy of crystals

Intrinsic birefringence of a chiral sodium chlorate crystal: Is cubic crystal truly optically neutral?

Crystal chirality and optical rotation sense in isomorphous Bi12SiO20 and Bi12GeO20

The rotatory dispersion of crystals of NaClO3 and NaBrO3 has been measured in the visible and ultraviolet region of the spectrum. Apart from a small infrared contribution, the rotatory dispersion of both crystals can be expressed as a difference of two terms. For NaClO3 the positive term has a greater strength than the negative one, whereas for NaBrO3 the reverse is the case. Thus corresponding configurations of the two crystals have opposite signs of optical rotation. The important point is brought out that calculations of optical activity in terms of atomic refractivities but neglecting rotatory dispersion, such as those carried out recently for these two crystals, arc necessarily inconclusive.

M. S. Madhava

Papers

Optical rotatory dispersion of crystals of sodium chlorate and sodium bromate

Optical rotatory dispersion of a mixed crystal of sodium chlorate-sodium bromate