Precision Polymer Waveplates
• l/4 and l/2 Retardance
• Birefringent Polymer Stack
• Zero Order and Achromatic Versions Available
Precision Achromatic and Zero Order Waveplates (Retarders) consist of carefully aligned birefringent polymer
sheets laminated between two precision N-BK7 windows, with options of standard l/4 and l/2 for common
visible and NIR wavelengths. These waveplates (retarders) experience less than 1% retardance change over
a ±10° angle of incidence. Each Precision Polymer Waveplate (Retarder) is mounted in a metal ring with the
fast axis clearly marked.
Construction: Birefringent Polymer Stack
Substrate: N-BK7
Outside Diameter: 25,4 ±0,127 mm
Thickness: 6,35 ±0,508 mm
Clear Aperture: 10,16 mm
Retardance Tolerance:
Achromatic: ≤λ/100 over operating range
Zero Order: ≤λ/350 at operating wavelength
Transmitted Wavefront, RMS:
Achromatic: ≤λ/4 (transmitted @ 632,8 nm)
Zero Order: ≤λ/5 (transmitted @ 632,8 nm)
Surface Quality: 40-20
Beam Deviation: ≤1 arcmin
AR Coating: Ravg ≤0,5% at normal incidence
Temperature Range: -20°C to 50°C
Damage Threshold, By Design:
Achromatic: 500 W/cm2 CW
300 mJ/cm2, 10 ns, visible
500 mJ/cm2, 10 ns, 1064 nm
Zero Order: 500 W/cm2 CW
600 mJ/cm2, 20 ns, visible
4J/cm2, 20 ns, 1064 nm
Precision Achromatic Waveplates (Retarders)
Wavelength
Polymer Waveplates (Retarders)
• Broadband Performance with
<2% Retardance Variation
• 12,7 mm and 25,4 mm Options Available
• l/4 and l/2 Retardance Options
TECHSPEC® Fresnel Rhomb Retarders are available
with design wavelengths of 532 nm and 1064 nm. By
utilizing a specific angle, Fresnel Rhomb Retarders impart
a retardance with each internal reflection of the
light, totaling λ/4. Each design is paired with either VIS
0° or NIR II coatings to provide efficient transmission
across a broad range of wavelengths. Optimized for
use in diode and fiber applications, these TECHSPEC®
Fresnel Rhomb Retarders deliver less than 2% retardance
variation across the specified wavelength range.
λ/4 Fresnel Rhomb Retarder λ/2 Fresnel Rhomb Retarder
Height
Typical Beam Path Width Width
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Fresnel Rhomb Retarders
(nm)
l/4 l/2
Stock No. Price Stock No. Price
485 - 630 #49-232 €999,00 #49-227 €999,00
630 - 835 #49-233 €999,00 #49-228 €999,00
735 - 985 #49-234 €999,00 #49-229 €999,00
920 - 1240 #49-235 €999,00 N/A –
Precision Zero Order Waveplates (Retarders)
Wavelength (nm) l/4 l/2
Stock No. Price Stock No. Price
488 #49-218 €599,00 #49-209 €599,00
532 #49-219 €599,00 #49-210 €599,00
632,8 #49-220 €599,00 #49-211 €599,00
670 #49-221 €599,00 #49-212 €599,00
780 #49-222 €599,00 #49-213 €599,00
800 #49-223 €599,00 #49-214 €599,00
830 #49-224 €599,00 #49-215 €599,00
1064 #49-225 €599,00 #49-216 €599,00
1550 #49-226 €599,00 #49-217 €599,00
• True Zero Order Waveplate Performance
• l/4 and l/2 Retardance
• Available with Multiple Wavelengths or Achromatic Designs
Polymer Waveplates (Retarders) are durable, low-cost alternatives to quartz waveplates that feature a thin birefringent
polymer film layered between two glass windows. Polymer Waveplates (Retarders) are designed to act as true
zero order waveplates, providing stable performance over wavelength shift and wide angles of incidence. Due to
their cemented construction and plastic birefringence material, these waveplates, or retarders, are not recommended
for high power laser use or for extreme temperature shifts. Note: Fast axis is marked on the edge of the glass.
Substrate: B270
Diameter: 25,0 mm
Diameter Tolerance: +0,0/-0,2 mm
Thickness: 2 ±0,2 mm
Parallelism (typical): 3 arcmin
Retardance Tolerance: ±10 nm @ DWL
AR Coating: Ravg <0,5% 400 - 700 nm
Polymer Waveplates (Retarders)
Design
Wavelength (nm)
l/4 l/2
Stock No. Price Stock No. Price
405 #91-012 €399,00 #91-011 €399,00
488 #90-938 €399,00 #90-934 €399,00
532 #90-939 €399,00 #90-935 €399,00
560 #90-940 €399,00 #90-936 €399,00
633 #90-941 €399,00 #90-937 €399,00
650 #91-014 €399,00 #91-013 €399,00
450 - 600 #88-198 €399,00 N/A –
TECHSPEC® Fresnel Rhomb Retarders
Design
Wavelength
Wavelength (nm)
Range (nm)
Height Entrance and Exit Surface: 12,7 mm Height Entrance and Exit Surface: 25,4 mm
l/4 Price l/2 Price l/4 Price l/2 Price
532 425 - 675 #36-140 €265,00 #36-146 €495,00 #36-141 €295,00 #36-147 €538,00
1064 750 - 1550 #36-142 €265,00 #36-148 €495,00 #36-143 €295,00 #36-149 €538,00
Height
Substrate: N-BK7
Dimensional Tolerance: ±0,10 mm
Surface Quality: 20-10
Irregularity @ 632,8 nm: l/10
Angle Tolerance (arcmin): ±3
Clear Aperture (mm): 12,7 mm: 9,3 x 9,3
25,4 mm: 18,8 x 18,8
Bevel: Protective bevel as needed
Coating: VIS 0˚ (425-675 nm) for 532 nm DWL
NIR II (750-1550 nm) for 1064 nm DWL
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