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Price range: $833.00 through $1,145.00
Key Features
Meadowlark Optics now offers Wide Field Retarders, the latest innovation in near-zero-order polymer retarder technology. At their design wavelength, Wide Field Retarders provide a consistent retardance value over a wide acceptance angle, out to 30° or more.
Standard quarter- and half-wave designs are available for common wavelengths in the visible to near-infrared region. The graphs show the Wide Field Retarder performance as a function of incidence angle for both half-wave and quarter-wave designs. Multilayer broadband antireflection (BBAR) coatings are included as standard. Note that BBAR coating performance varies with incidence angle; these coatings perform best at (or near) normal incidence.Retarder Material: Birefringent Polymer
Substrate Material: N-BK7
Retardance: λ/2 and λ/4
Retardance Accuracy: ≤ λ/250
at normal incidence at the center of the part
Retardance Change (at 30˚tilt) –
Half-wave: ≤ λ/100
Quarter-wave: ≤ λ/200
Transmitted Wavefront Distortion: ≤ λ/2
Surface Quality: 60 – 40 scratch-dig
Beam Deviation: ≤ 1 arc-min
Reflectance (per surface) –
At normal incidence: ≤ 0.5 %
At 30˚ incidence: ≤ 1.0 %
Operating Temperature: 0 ˚C to 40 ˚C
Item # | Mount | Size | Wavelength | Retardance | Clear Aperture | Thickness | Lead Time | Price | Add to cart |
|---|---|---|---|---|---|---|---|---|---|
WFH-050-0532 | Unmounted | 0.500 in. (12.70 mm) | 532 | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFH-050-0633 | Unmounted | 0.500 in. (12.70 mm) | 633 | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFH-050-0670 | Unmounted | 0.500 in. (12.70 mm) | 670 | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFH-050-0780 | Unmounted | 0.500 in. (12.70 mm) | 780 | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFH-050-0850 | Unmounted | 0.500 in. (12.70 mm) | 850 | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFH-050-1064 | Unmounted | 0.500 in. (12.70 mm) | 1064 | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFH-050-1550 | Unmounted | 0.500 in. (12.70 mm) | 1550 | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFH-050-λ | Unmounted | 0.500 in. (12.70 mm) | Specify λ 400-1800 in Checkout | λ/2 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFQ-050-0532 | Unmounted | 0.500 in. (12.70 mm) | 532 | λ/4 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 | |
WFQ-050-0633 | Unmounted | 0.500 in. (12.70 mm) | 633 | λ/4 | 0.400 in. (10.16 mm) | 0.140 in. (3.56 mm) | 6 weeks | $833.00 |
As with all Meadowlark Optics waveplates, the fast axis is conveniently marked. Custom retardance values are available for wavelengths from 400 – 1800 nm. Please call for application assistance or to request a custom quotation.
SPECIFICATIONS | |
Retarder Material | Birefringent Polymer |
Substrate Material | N-BK7 |
Standard Wavelengths | 532, 632.8, 670, 780, 850, 1064, and 1550 nm |
Custom Wavelengths | 400 – 1800 nm (please specify) |
Retardance | λ/2 and λ/4 |
Retardance Accuracy | ≤ λ/250 at normal incidence at the center of the part |
Retardance Change (at 30˚tilt) | |
Half-wave | ≤ λ/100 |
Transmitted Wavefront Distortion | ≤ λ/2 |
Surface Quality | 60 – 40 scratch-dig |
Beam Deviation | ≤ 1 arc-min |
Reflectance (per surface) | |
At normal incidence | ≤ 0.5 % |
Operating Temperature | 0 ˚C to 40 ˚C |
ORDERING INFORMATION | |||
Mounted | |||
Clear Aperture | Dimensions | Thickness | Part Number |
Quarter Wave | |||
0.40 | Ø 1.00 | 0.25 | WQM – 050 – λ |
0.70 | Ø 1.00 | 0.35 | WQM – 100 – λ |
Half Wave | |||
0.40 | Ø 1.00 | 0.25 | WHM – 050 – λ |
0.70 | Ø 1.00 | 0.35 | WHM – 100 – λ |
Unmounted | |||
Clear Aperture | Dimensions | Thickness | Part Number |
Quarter Wave | |||
0.40 | Ø 0.50 | 0.14 | WFQ – 050 – λ |
0.80 | Ø 1.00 | 0.28 | WFQ – 100 – λ |
Half Wave | |||
0.40 | Ø 0.50 | 0.14 | WFH – 050 – λ |
0.80 | Ø 1.00 | 0.28 | WFH – 100 – λ |
Custom sizes and retardance values are available. Please contact your Meadowlark Optics sales engineer for a custom quote.
