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Transparent optical plates made by birefringent materials that are mostly used for altering the polarization state of light beams by retarding one polarization component. Learn More

Product	Retardance	Clear Aperture	Wavelength Range	Availability	Price (USD)
Achromatic Half Waveplate	λ/2	20.3 mm (0.8")	630 - 545485 nm	1 - 2 days	$ 968.00
Product Code Wavelength Range 630 - 545485 nm Center Wavelength 485 - 630 nm 545 nm Thickness 6.6 mm (0.26") Retardance λ/2 Clear Aperture 20.3 mm (0.8") Substrate N-BK7 Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Mount Unmounted Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	Ø 17 mm	343 nm	4 - 5 days	$ 211.00
Product Code Wavelength Range 343 nm Center Wavelength 343 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 17 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 17 mm	257 nm	4 - 5 days	$ 308.00
Product Code Wavelength Range 257 nm Center Wavelength 257 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 17 mm Substrate Single Crystal Quartz Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	10.1 mm (0.4")	400 - 1800 nm (Center Wavelength)	1 - 2 days	$ 825.00
Product Code Wavelength Range 400 - 1800 nm (Center Wavelength) Center Wavelength 400 - 1800 nm (Specify at Checkout) Thickness 3.3 mm (0.13") Retardance λ/2 Clear Aperture 10.1 mm (0.4") Substrate N-BK7 Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Mount Unmounted Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	Ø 11 mm	532 nm	4 - 5 days	$ 99.00
Product Code Wavelength Range 532 nm Center Wavelength 532 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 11 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Unmounted Shape Round Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 11 mm	800 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 800 nm Center Wavelength 800 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 11 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Unmounted Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 17 mm	532 nm	4 - 5 days	$ 176.00
Product Code Wavelength Range 532 nm Center Wavelength 532 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 17 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	20.3 mm (0.8")	400 - 1800 nm (Center Wavelength)	1 - 2 days	$ 968.00
Product Code Wavelength Range 400 - 1800 nm (Center Wavelength) Center Wavelength 400 - 1800 nm (Specify at Checkout) Thickness 6.6 mm (0.26") Retardance λ/2 Clear Aperture 20.3 mm (0.8") Substrate N-BK7 Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Mount Unmounted Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	17.7 mm (0.7")	1200 - 1650 nm	1 - 2 days	$ 1040.00
Product Code Wavelength Range 1200 - 1650 nm Center Wavelength 1200 - 1650 nm 1400 nm Thickness 8.89 mm (0.35") Retardance λ/2 Clear Aperture 17.7 mm (0.7") Substrate N-BK7 Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Mount Non-Threaded Mount Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	Ø 17 mm	950 nm	Contact Supplier	$ 176.00
Product Code Wavelength Range 950 nm Center Wavelength 950 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 17 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 11 mm	1550 nm	Contact Supplier	$ 99.00
Product Code Wavelength Range 1550 nm Center Wavelength 1550 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 11 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Unmounted Shape Round Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	10.1 mm (0.4")	985 - 840735 nm	1 - 2 days	$ 919.00
Product Code Wavelength Range 985 - 840735 nm Center Wavelength 735 - 985 nm 840 nm Thickness 6.35 mm (0.25") Retardance λ/2 Clear Aperture 10.1 mm (0.4") Substrate N-BK7 Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Mount Non-Threaded Mount Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	> 34 mm	650 - 1100 nm	In stock	$ 3215.00
Product Code Wavelength Range 650 - 1100 nm Coating BBAR (650 - 1100 nm) Reflectance < 0.75% (650 - 1100 nm, Average) Diameter 50.8 mm (2") Dimensions Ø 50.8 mm (2") Thickness 6 mm Parallelism < 10'' Retardance λ/2 Clear Aperture > 34 mm Substrate Crystalline Quartz Magnesium Fluoride Damage Threshold Pulsed > 5 J/cm² (10 ns, 10 Hz, 1064 nm) Shape Round Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 (632 nm, P-V) Thickness Tolerance ±0.2 mm Coating Features Broadband Supplier Location New Jersey, USA See product details More from Edmund Optics
Achromatic Half Waveplate	λ/2	Ø 22.6 mm (0.89")	1100 - 2000 nm (Coating Range)	In stock	$ 1059.22
Product Code Wavelength Range 1100 - 2000 nm (Coating Range) Reflectance < 0.5% (1100 - 2000 nm, Average, per Surface) Diameter 25.4 mm (1") 30.5 mm (1.2", Mounted) 25.4 mm (Unmounted) Dimensions Ø 25.4 mm (1") Thickness 2.67 mm (Mount) Retardance λ/2 Clear Aperture Ø 22.6 mm (0.89") Substrate Crystalline Quartz Magnesium Fluoride Mount Threaded Mount, SM, SM1 Shape Round Surface Quality 20-10 scratch-dig Transmitted Wavefront Error < λ/4 (633 nm, RMS) Beam Deviation < 10'' Retardance Accuracy < λ/300 Angle of Incidence 0° Diameter Tolerance ±0.2 mm Supplier Location New Jersey, USA See product details More from Thorlabs
Achromatic Half Waveplate	λ/2	Ø 11 mm	266 nm	4 - 5 days	$ 204.00
Product Code Wavelength Range 266 nm Center Wavelength 266 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 11 mm Substrate Single Crystal Quartz Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Mount Unmounted Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 11 mm	1550 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 1550 nm Center Wavelength 1550 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 11 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Unmounted Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	10.1 mm (0.4")	1200 - 1650 nm	1 - 2 days	$ 825.00
Product Code Wavelength Range 1200 - 1650 nm Center Wavelength 1200 - 1650 nm 1400 nm Thickness 3.3 mm (0.13") Retardance λ/2 Clear Aperture 10.1 mm (0.4") Substrate N-BK7 Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Mount Unmounted Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	Ø 11 mm	633 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 633 nm Center Wavelength 633 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 11 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Unmounted Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 11 mm	532 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 532 nm Center Wavelength 532 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 Clear Aperture Ø 11 mm Substrate Single Crystal Quartz Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Mount Unmounted Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	> 8 mm	450 - 650 nm	In stock	$ 795.00
Product Code Wavelength Range 450 - 650 nm Coating BBAR (450 - 650 nm) Reflectance < 0.75% (450 - 650 nm, Average) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6 mm Parallelism < 10'' Retardance λ/2 Clear Aperture > 8 mm Substrate Crystalline Quartz Magnesium Fluoride Damage Threshold Pulsed > 5 J/cm² (10 ns, 10 Hz, 1064 nm) Shape Round Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 (632 nm, P-V) Thickness Tolerance ±0.2 mm Coating Features Broadband Supplier Location New Jersey, USA See product details More from Edmund Optics