גביש קוורץ – Crystal Quartz Multi Order waveplate

להלן מספר דוגמאות

1.Crystal Quartz Multi Order half waveplate
retardation L/2 @355nm
retardation tolerance +/-L/300
dia.25.4+0/-0.1mm
thickness ~05mm
SQ 20-10s/d
wavefront distortion l/10 @633nm
parallelism: <10arcsec
coated AR/AR @355nm
R<0.25% per surface
AOI=0deg

2. Crystal Quartz Multi Order quarter waveplate
retardation L/4 @355nm
retardation tolerance +/-L/300
dia.25.4+0/-0.1mm
thickness ~0.5mm
SQ 20-10s/d
wavefront distortion l/10 @633nm
parallelism <10arcsec
coated AR/AR @355nm
R<0.25% per surface
AOI=0deg

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Crystal Quartz Multi Order half waveplate, retardation L/2 @355nm, retardation tolerance +/-L/300, dia.25.4+0/-0.1mm, thickness ~0.5mm, SQ 20-10s/d, wavefront distortion l/10 @633nm, parallelism<10arcsec, coated AR/AR @355nm, R<0.25% per surface, AOI=0deg, Crystal Quartz Multi Order quarter waveplate, retardation L/4 @355nm, retardation tolerance +/-L/300, dia.25.4+0/-0.1mm, Retardation of multiple order plates, thickness ~0.5mm, SQ 20-10s/d, wavefront distortion l/10 @633nm, parallelism <10arcsec, coated AR/AR @355nm, R<0.25% per surface, AOI=0deg, גביש קוורץ, גבישי קוורץ, חלון גביש קוורץ, חלון אופטי גביש קוורץ

The following are 10 products that are similar in function (polarization control) and are in high demand today due to their superior performance or unique properties.

Crystal Quartz Zero-Order Waveplates: These are the direct evolution of multi-order plates. By using a much thinner single plate or, more commonly, two multi-order plates with their fast and slow axes crossed, they achieve a net retardation of a fraction of a wavelength. This design significantly reduces the waveplate’s sensitivity to temperature and wavelength fluctuations, making them the preferred choice for high-precision, high-power, and temperature-sensitive applications.
Achromatic Waveplates: Designed for use with broadband light sources, such as tunable lasers or white light sources, these waveplates are a step up from zero-order plates. They are typically made by cementing two different birefringent materials (e.g., quartz and magnesium fluoride) together. The materials are carefully chosen to compensate for each other’s chromatic dispersion, ensuring a nearly constant phase retardation over a very wide spectral range. They are in high demand for applications like spectroscopy, femtosecond lasers, and medical imaging.
Superachromatic Waveplates: These are an even more advanced version of achromatic waveplates, offering an even wider wavelength range of constant retardation. They often use more than two materials to achieve this superior performance. They are a top choice for applications that require the utmost precision with extremely broad bandwidths, such as in scientific research and telecommunications.
Polymer Zero-Order Waveplates: A cost-effective alternative to crystalline quartz, polymer waveplates are made from a thin layer of a liquid crystal polymer material laminated between two glass plates. They offer excellent angular field of view and lower sensitivity to the angle of incidence. Their true zero-order nature makes them less dependent on wavelength and temperature than multi-order plates, and their manufacturing process can produce very large apertures, which are often prohibitively expensive with crystalline materials.
Glan-Thompson Polarizers: While a waveplate modifies polarization, a polarizer filters it. Glan-Thompson polarizers are a type of prism polarizer known for their high extinction ratio and high laser damage threshold. They are made from two calcite prisms cemented together. They are in high demand for applications that require a very pure, linearly polarized beam, often used in conjunction with waveplates.
Glan-Laser Polarizers: A variation of the Glan-Thompson polarizer, the Glan-Laser polarizer is designed for high-power laser applications. They often use an air gap instead of cement to prevent damage from high-power lasers, and the prisms are cut at a specific angle to increase the damage threshold.
Fiber Polarization Controllers: For fiber-optic systems, free-space polarization components are often not practical. Fiber polarization controllers use mechanical stress to induce birefringence in a fiber, allowing for the manipulation of the polarization state of light propagating through it. These are essential components in fiber-optic communications and sensing.
Pockels Cells (Electro-Optic Modulators): These devices use the electro-optic effect to change the polarization of light. By applying a voltage to a crystal, the refractive index can be altered, thereby controlling the phase retardation. Unlike a waveplate, which provides a fixed retardation, Pockels cells offer a fast, electrically controllable change in polarization, making them essential for high-speed switching and modulation in laser systems.
Babinet-Soleil Compensators: This is a type of tunable waveplate. It consists of two birefringent wedges that can be adjusted relative to each other to provide a variable amount of retardation. They are used in research and lab settings where a precise, adjustable retardation is required.
Fresnel Rhombs: These are prism-based retarders that utilize total internal reflection to introduce a phase shift. Unlike waveplates, which rely on birefringence, Fresnel rhombs’ retardation is largely independent of wavelength, making them an achromatic alternative for many applications. They are used when broad spectral range and high-power handling are critical.