Optical Crystals Information

Optical Crystals Information

Optical crystals are transparent in different spectral regions, depending upon the crystal material. They include nonlinear, photorefractive crystals, and laser crystals’ acousto-optic and electro-optic combinations; X-ray analysis and scintillation crystals; and other types of crystals that are used in semiconductors.

Uses

Optical crystals are used mainly in laser applications. For example, non-linear devices are used as frequency converters and consist of a crystal made of lithium niobate, barium borate, lithium triborate, and potassium titanyl phosphate. Each has specific operating characteristics and should be selected based on the laser application. For example, a lithium niobate crystal may be used to as a frequency doubler in an optical parametric oscillator (OPO) device.

Optical crystals can be used in many different infrared (IR) laser applications. Examples include scintillation detectors and gas analyzers. These crystals are also widely used in military infrared optical devices. Crystal sapphire optical components are used in high power laser windows. Some optical crystals are clear or colorless. Acousto-optical crystals such as tellurium dioxide can be used in argon laser applications.

• Optical Properties of Single-Crystal Sapphire Fibers
  . The losses in these fibers have been reduced further through a postgrowth anneal at 1000 degrees C in air, from 5.4 to 1.5 dB/m at 543 nm and from 0.4-0.3 dB/m at 2.94 um. These fibers delivered 4.7 W at 10 Hz of Er:YAG laser power. Optical properties of single-crystal sapphire fibers Optical...
• Wavelength-scalable hollow optical
  Conventional solid-core optical fibres require highly transparent. materials. Such materials have been difficult to identify owing to. the fundamental limitations associated with the propagation of. light through solids, such as absorption, scattering and nonlinear. effects. Hollow optical fibres...
• Optical Clarity of Fluoropolymers (.pdf)
  . Polymer Family. transmittance. of base polymer (%). Optical glass. 99.9. PMMA 92. PC 89. SAN 88. PS 88. ABS 79. PVC 76. Crystalline polymers. The optical behavior of crystalline plastics is more complex because of the presence of the. crystallites and their effect on the light. · Crystal density...