Description: 488 nm Wavelength Ø1" Zero-Order Half-Wave Plate with a SM1-Threaded Mount
Part Number | WPH10M-488 |
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Category | Optics |
Manufacturer | ThorLabs |
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The WPH10M-488 by ThorLabs is a highly efficient, SM1-threaded zero-order half-wave plate that is designed to offer a λ/2 difference in the length of the optical path. The half-wave plate includes two quartz plates that are strategically aligned to create a retarder with precise retardance value. The value obtained is the difference between the individual plate's retardance. The WPH10M-488’s multi-order design offers a higher dependency on temperature and wavelength than its compound counterparts, making it an ideal choice for precision optical applications.
The WPH10M-488 is constructed using a highly advanced manufacturing process. It features an etched stainless steel spacing ring that is placed between the two multi-order wave plates, which are then epoxyed together to create a highly stable and durable product. To further enhance its durability and stability, the WPH10M-488 is mounted in an aluminum housing that is anodized and has engravings of the details of the unit. These engraved details include the design wavelength, the part identification, and the fast axis orientation with a designated line on the wave plate.
With its Ø1" optic, the WPH10M-488 can be easily mounted in a SM1-threaded (1.035"-40) lens tube, which can be threaded directly into SM1-threaded rotation mounts. The product can also be mounted internally using compatible retaining rings. The WPH10M-488 is designed to be easily removed from its mount for use in custom or OEM applications with the use of a spanner wrench. With the spanner wrench, the retaining ring that secures the optic in the mount can be removed. Additionally, an unmounted wave plate has a small flat which indicates the fast axis, which makes it easy to identify the orientation of the wave plate.
Clear Aperture | Ø22.6 mm (Ø0.89") |
Unmounted Diameter | 25.4 ± 0.1 mm |
Unmounted Thickness | 2.04 mm |
Design Wavelength | 488 nm |
Reflectance | <0.25% Per Surface at 488 nm |
Beam Deviation | <10 arcsec |
Material | Crystalline Quartz |
Transmitted Wavefront Error | λ/4 @ 633 nm |