Waveplate Principles
Download Principles Retarders are used in applications where control or
Precision Waveplate
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$435.00 – $1,727.00
Key Features
- True zero-order retarders
- Excellent off-axis performance
- Unequaled measured accuracy
- Less temperature dependence than quartz waveplates
- Lower cost than compound zero-order waveplates
- Better angular acceptance than compound zero-order quartz waveplates
Precision Waveplate
Common Specifications
Retarder Material: Birefringent Polymer
Substrate Material: N-BK7
Retardance Accuracy: ≤ λ/350
Transmitted Wavefront Distortion: ≤ λ/5
Surface Quality (scratch-dig): 40 – 20
Beam Deviation: ≤ 1 arc-min
Reflectance (per surface): ≤ 0.5 % at normal incidence
Laser Damage Threshold:
500 W/cm², CW
600 mJ/cm², 20 ns, visible
4 J/cm², 20 ns, 1064 nm
Operating Temperature Range: – 20˚C to 50˚C
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Item # | Mount | Size | Wavelength | Retardance | Clear Aperture | Thickness | Lead Time | Price | Add to cart |
|---|---|---|---|---|---|---|---|---|---|
NQ-200-λ | Unmounted | 2.000 in. (50.80 mm) | Specify λ 400-1800 in Checkout | λ/4 | 1.600 in. (40.64 mm) | 0.510 in. (12.95 mm) | 1 - 2 Days | $1,727.00 | |
NC-200-λ | Unmounted | 2.000 in. (50.80 mm) | Specify λ 400-1800 in Checkout | Specify in Checkout | 1.600 in. (40.64 mm) | 0.510 in. (12.95 mm) | 1 - 2 Days | $1,727.00 |
Precision Waveplate
Precision Retarders are supplied with a broadband antireflection coating. Optical transmittance of a Precision Retarder is typically greater than 97%. The retardance δ at a wavelength λ that is different from the center wavelength λc is given by:
δ ≈ δc(λc /λ)
where δc is the retardance at λc…
This relationship is very important when using sources which vary in wavelength from their nominal value. The 2 graphs show the retardance behavior as a function of relative wavelength for a quarter- and half-wave retarder, respectively. The Mueller calculus can be used to calculate the transmitted polarization state based upon the retardance differences from the ideal case.
Since polymer retarders are true zero-order devices, they offer the significant advantage of improved angular performance. You can expect less than 1% retardance change over ± 10° incidence angle.
See Details
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) |
Standard Retardances | λ/2 and λ/4 |
Retardance Accuracy | ≤ λ/350 |
Retardance Change (at 30˚tilt) | ≤ λ/32 (Half-Wave) and ≤ λ/59 (Quarter-Wave) |
Transmitted Wavefront Distortion | ≤ λ/5 |
Surface Quality (scratch-dig) | 40 – 20 |
Beam Deviation | ≤ 1 arc-min |
Reflectance (per surface) | ≤ 0.5 % at normal incidence |
Threshold | 500 W/cm², CW |
Operating Temperature Range | 20 ˚C to 50 ˚C |
Ordering Information – Contact Us or Buy Online
ORDERING INFORMATION | |||
Mounted | |||
Clear Aperture | Dimensions | Thickness | Part Number |
Half-Wave | |||
0.40 | Ø 1.00 | 0.25 | NHM – 050 – λ |
0.70 | Ø 1.00 | 0.35 | NHM – 100 – λ |
1.20 | Ø 2.00 | 0.50 | NHM – 200 – λ |
Quarter-Wave | |||
0.40 | Ø 1.00 | 0.25 | NQM – 050 – λ |
0.70 | Ø 1.00 | 0.35 | NQM – 100 – λ |
1.20 | Ø 2.00 | 0.50 | NQM – 200 – λ |
Unmounted | |||
Clear | Dimensions | Thickness | Part Number |
Half-Wave | |||
0.40 | Ø 0.50 | 0.13 | NH – 050 – λ |
0.80 | Ø 1.00 | 0.26 | NH – 100 – λ |
1.60 | Ø 2.00 | 0.51 | NH – 200 – λ |
Quarter-Wave | |||
0.40 | Ø 0.50 | 0.13 | NQ – 050 – λ |
0.80 | Ø 1.00 | 0.26 | NQ – 100 – λ |
1.60 | Ø 2.00 | 0.51 | NQ – 200 – λ |
Please specify your center wavelength λ in nanometers when ordering.
Custom sizes and shapes with improved transmitted wavefront distortion and/or beam deviation are available.
Contact us below for a custom quote.
Graphs & Figures
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Basic Polarization Techniques and Devices
Meadowlark Optics Basic Polarization Techniques and Devices © 2005 Meadowlark
