Visible Achromatic Halfwave Retarder
- Active Range: 425nm-750nm
- Price competitive
- True zero order
- Wide angle of acceptance
- Very large clear apertures
- Multi layer polymer stack
- Ultra wide visible / short NIR bandwidth
- Free standing or laminated between glass
- BBAR coated directly onto polymer optional
- Large aperture available, 100mm OD
- .01 waves tolerance
- 99% internal transmittance
- index of refraction = 1.58
- Performs at 405nm (.02 waves)
- BBAR on raw polymer: R ≤ .75% per surface Avg.
We Can Laser Cut Your Films
AHWP3 | Performance
Eliminate single wavelength waveplates with just one component. The achromatic halfwave retarder rotates the incoming plane of polarization by twice the optic axis angle. The most common rotation is 90˚ (optic axis at 45˚). Our achromatic retarders are known to have very large clear apertures and precise polarization rotation. This broadband waveplate is a favorite among the microdisplay (white light) and analytic instrumentation (LEDs, laser diodes, multi-light source) application markets.
AHWP3 | Free Standing Achromatic Waveplates
Free Standing Achromatic (FSA) Waveplates
OEM cost effective achromatic half waveplates. Bolder Vision now offers lower-cost, achromatic, free standing polymer (FSA) waveplates. This achromat has no outer substrates and is ideal for integration into any production optical system because of low price and flexibility. Can be dual side anti-reflection coated for increased transmission.
Advantages of free standing achromats
Distinctly useful for OEM applications
Form Factor – Free standing waveplates can be sliced or die cut specifically for custom applications. This capability affords optic system designers to shrink their form factor size, dramatically decrease their cost per unit and expand design options.
AR Coatings – BBAR coatings on one side or both sides of FSA waveplates. Laminate onto pre-existing substrates (AR coating one side) or as a free standing retarder component (AR coating both sides).
Cost – Per unit cost contracts due to less raw materials and labor. The retardation characteristics are exactly the same as our standard product. Some designs do not call for low transmitted wavefront or high abrasion resistance. If this is true for you, the free standing polymer achromatic waveplate may be a wise choice to consider.
Environmentally Stable – The multi layer polymer stacks are optically fused using no adhesives. This fact results in a robust monolithic retarder that has sound environmental specs, high transmittance and a singular index of refraction.
Birefringent Material Fused polymers Stack Thickness .35mm, +/- 0.05mm Optional AR Coating R ≤ .75% per surface Avg., 400-700nm Environmental 60 degrees Celsius at 90% RH for 1000 hours
80 degrees C for 1000 hours dry, -30 degrees C for 1000 hours dry
-20 degrees (1 hour) to 75 degrees Celsius (1 hour) for 100 cycles
AHWP3 | Glass Laminated
Visible Halfwave Achromatic Retarders
Off the Shelf
Bolder Vision carries an off the shelf achromat retarder 425-750nm with performance down to 405nm. Our glass laminated achromatic retarder delivers low transmitted wavefront distortion, high internal transmittance and very large clear apertures . The standard outer diameter fits into many housings sold out of catalogs today.
Naturally, BVO will manufacture any size glass for your requirements. OEM wafer slicing or water jet cutting available.
Standard Halfwave Achromat Specifications
Birefringent Material Polymer, sandwiched between BK-7 substrates Recommended Wavelength Range λ/2, over visible region from 425 – 750nm Scratch/Dig 40-20 Substrates BK-7, grade-A, fine annealed AR Coating R ≤ 0.65% loss per surface (normal incidence) average,
BBAR 400-900nm wavelength range
Size 25.4mm outer diameter, 80% clear aperture (20mm) Acceptance Angle ± 15 degrees Unit Thickness 4.35 mm +/- .20mm Optic Axis Stability ≤ 1 degree Wavefront Distortion λ/4 @ 632.8nm Temperature Range 20°C to 40°C Wedge ≤ 2 minutes Damage Threshold 500 Watt/cm2 CW
.3 J/cm2 10 nsec pulses @ 532nm