Near Infrared Achromatic Quarterwave Retarder
- Active Range: 650nm-1100nm
- Price competitive
- True zero order
- Wide angle of acceptance
- Very large clear apertures
- Multi layer polymer stack
- Ultra wide NIR bandwidth
- Visible wavelength overlap
- 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
- BBAR on raw polymer: R ≤ .75% per surface Avg.
We Can Laser Cut Your Films
AQWP6 | PerformanceEliminate single wavelength waveplates with just one component. The NIR achromatic quarterwave retarder converts incoming plane polarized light into circular polarization. NIR quarterwave retarders will make both lefthand or righthand circular polarization states. Our achromatic retarders are known to have very large clear apertures and precise quarterwave phase retardance. The AQWP6 broadband waveplate is popular with NIR imaging developers, laser cavity isolation, optical isolation in NIR systems and measurement device manufacturers.
AQWP6 | Free Standing
Free Standing Achromatic Waveplates
OEM cost effective NIR achromatic quarter 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 .55mm, +/- 0.05mm Optional AR Coating R ≤ .75% per surface Avg., 625-1100nm 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
AQWP6 | Glass Laminated
Near Infrared Quarterwave Achromatic Retarders
Off the Shelf
Bolder Vision carries an off the shelf achromat retarder 675-1100nm. Our glass laminated NIR 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 NIR Quarterwave Achromat Specifications
Birefringent Material Polymer, sandwiched between BK-7 substrates Recommended Wavelength Range λ/4, over NIR region from 675 – 1100nm 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 or BBAR 900-1700nm wavelength range
Size 25.4mm outer diameter, 80% clear aperture (20mm) Acceptance Angle ± 15 degrees Unit Thickness 4.55 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