Achromatic Waveplate from CRYSMIT
Description
Achromatic wave plate is a special kind of Zero Order wave plate, comprised of two wave plates made by two different birefringent materials (e.g. crystal quartz and magnesium fluoride). The existence of chromatic dispersion greatly affects the refractive indices of materials. The two birefringent materials which construct the achromatic wave plates have complementary birefringent properties that could attenuate the chromatic dispersion effects so that excessive shifts of retardation over wavelength change in the first wave plate could be counterbalanced by the second wave plate. This results in a virtually flat response of phase delay over a broad wavelength band (usually hundreds of nanometers), therefore achromatic wave plate is an excellent choice for applications orienting tunable laser sources, femtosecond laser systems, spectroscopy, and other systems concerning broadband light sources.
The two most common phase retardation values are lambda/2 and lambda/4 retardation, half wave plates could be applied to the rotation of vertical polarization and horizontal polarization, whilst quarter wave plates could be used for conversion of linear and circular polarization. Crysmit offers Achromatic Half Wave plates and Achromatic Quarter Wave plates made from single crystal quartz and magnesium fluoride (MgF2), configured with a high-quality AR coating. The two wave plates are either cemented using NOA61 or with an architecture of an air gap in between. Achromatic wave plates with an air-spaced design are coated on all faces, then mounted on opposite sides of a spacer, placed within a cell, to form an air gap between the quartz wave plate and the MgF2 wave plate. The air-spaced modules have particularly promoted damage threshold greater than 500MW/cm^2, and are adaptive to high power lasers.
Off-the-shelf achromatic wave plates are available for online shopping in Crysmit. The standard achromatic wave plates are of half or quarter retardation, with three optional wavelength ranges: 450-650nm, 700-1000nm, 950-1300nm covering the visible, and a portion of the infrared Spectral. Fast despatch and economized pricing is guaranteed. Incidentally, If you have any other specific requirements, Crysmit also provides custom services where all the parameters could be tailored to suit your demand.
Achromatic Waveplate from CRYSMIT
Specifications |
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|---|---|
| Waveplate Type: | Achromatic |
| Material: | Quartz and MgF2 |
| Mounting: | Unmounted |
| Shape: | Round |
| Size: | 12.7 mm |
| Center Wavelength: | 532 nm |
| Retardation: | Lambda/2 |
| Retardation Accuracy: | +/- Lambda/100 |
| Wavefront Distortion: | <= Lambda/10 |
| Surface Quality (Scratch-Dig): | 10-5 |
Features
- Achromatic Wave plate is comprised of Quartz and MgF2 crystals.
Various retardations: Half wave plate ,Quarter wave plate, Octadic wave plate
Wavelength band options: 450-650nm, 700-1000nm, 950-1300nm and 1200-1650nm
Off-the-shelf and customized modules available
Flat retardance over a certain wavelength range
NOA61 cemented or Air spaced structure - Typical Diameter (Φmm): 10.0, 12.7, 15.0, 20.0
- Diameter Tolerance (mm): +0.0/-0.2
- Wavefront Distortion: λ/4@633nm
- Retardation: λ/2 and λ/4
- Retardation Tolerance: <λ/100 over wavelength range
- Parallelism: <3arc second (General), <1 arc second (High Precision)
- Surface Quality: 40/20
- Clear Aperture Central: 90%
- Coating: <0.5% @wavelength range
Applications
Imaging Systems: Achromatic wave plates are used in imaging systems to correct for polarization aberrations that can occur due to the wavelength-dependent behavior of optical components. They ensure consistent and accurate imaging across different wavelengths, improving the overall image quality.
Biomedical Optics: In biomedical optics, achromatic wave plates are employed in techniques such as polarization-sensitive optical coherence tomography (PS-OCT) and polarization microscopy. They help in characterizing and visualizing biological tissues by providing accurate polarization control and reducing artifacts caused by wavelength-dependent effects.
Laser Diode Systems: Achromatic wave plates are used in laser diode systems to control and adjust the polarization state of laser beams. They ensure stable and consistent output polarization, which is essential in applications such as laser diode spectroscopy, fiber optic communications, and laser-based manufacturing processes.
Ellipsometry: Achromatic wave plates are utilized in ellipsometry, a technique used to measure and analyze the optical properties of materials. They help in accurately determining the phase difference between the polarized components of reflected or transmitted light over a wide range of wavelengths, enabling precise characterization of thin films and surfaces.
Optical Instrumentation: Achromatic wave plates are widely used in various optical instruments, including polarimeters, optical modulators, wave plate-based retardation plates, and wave plate-based tunable filters. They ensure wavelength-independent performance and allow for accurate measurement, modulation, and control of light polarization.
Astronomical Optics: Achromatic wave plates find applications in astronomical optics, particularly in instruments used for polarimetry and spectroscopy. They help in studying the polarization properties of celestial objects and analyzing the spectral signatures of astronomical phenomena across a broad range of wavelengths.
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2016
Frequently Asked Questions
The available wavelength ranges for Crysmit AWP are 450-680nm, 700-1000nm, 950-1300nm, and 1200-1650nm. Other wavelengths are also available upon request.
AWP achieves wavelength independence by using two different crystalline materials to yield quarter- or half-wave retardation over a broad spectral range.
Achromatic Waveplate (AWP) is a type of waveplate that provides a constant phase shift independent of the wavelength of light that is used.
The Retardation tolerance of Crysmit AWP is better than λ/100 over the entire wavelength range.