Zero-Order Waveplate WPA420
Various zero-order waveplates are available, including optically contacted, air-spaced and cemented zero-order waveplates. Waveplates at various wavelengths can be customized to customer requirements. A zero-order waveplate combines two multiple-order quartz waveplates whose retardances cancel to produce a zero-order effect. Compared with multiple-order waveplates, zero-order waveplates are less sensitive to temperature and wavelength and can operate at relatively large acceptance angles, making them suitable for high-precision optical systems. Material options: quartz crystal or MgF2 crystal. Features: air-spaced or optically contacted design; customizable wavelengths: 150-7000nm; antireflection coating on all surfaces; high retardance accuracy; insensitive to ambient temperature. Fabrication specifications: standard wavelengths: 266nm,355nm,532nm,632.8nm,780nm,808nm,980nm,1064nm,1310nm,1550nm. Standard optically contacted zero-order waveplates: standard air-spaced zero-order waveplates:
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Overview
Specifications
| Parameter | Value |
|---|---|
| Retardance [Air-Spaced Zero-Order Waveplate] | λ/4 |
| Diameter [Air-Spaced Zero-Order Waveplate] | 20.0 mm |
| Standard Wavelength [Air-Spaced Zero-Order Waveplate] | 25.4 |
| Standard Wavelength [Discrete Standard Wavelengths Listed on This Page] | 266nm,355nm,532nm,632.8nm,780nm,808nm,980nm,1064nm,1310nm,1550nm |
| Customizable Wavelength [Customized According to Customer Requirements; the Full Wavelength Range Does Not Apply to Every Model] | 150-7000nm |
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Datasheet
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Waveplate Waveplates 100optics
Transmission range [General page-top description, without specific subtype/material identification]: 330-2100 nm Coefficient of Thermal Expansion [General page-top description, without specific subtype/material identification]: 7.5x10⁻⁶ Density [General page-top description, without specific subtype/material identification]: 2.51 g/cubic centimeter
Waveplates are made from birefringent materials. The speeds of the o ray and the other ray through the material are inversely proportional to their refractive indices. Their speed difference produces a phase difference when they recombine; at a particular wavelength, this is determined by the retarding thickness. Transmission range: 330–2100nm. Thermal-expansion coefficient: 7.5 x10⁻⁶/K. Density: 2.51g per cubic centimeter. Half-wave plates: thickness gives a phase difference of L/2 wavelengths for true zero order, or multiples of l/2 wavelengths for multiple order. A linearly polarized incident beam remains linearly polarized, but its angle to the optical axis is twice the incident angle. A half-wave plate therefore acts as a continuously adjustable polarization rotator, used to rotate the polarization plane, for electro-optic modulation, and with a polarizing cube as a variable-ratio beamsplitter. Quarter-wave plates: thickness gives a phase difference of L/4 wavelengths for true zero order, or multiples of l/4 wavelengths for multiple order. When the angle q between the incident electric-field vector and the retarding principal plane is 45, the output is circularly polarized. Double passage by mirror reflection makes a quarter-wave plate act as a half-wave plate, rotating the polarization plane through a particular angle. Applications include generating circular or linear polarization from circular or elliptical states, optical pumping, suppressing unwanted reflections, and optical isolation.
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