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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	Ø 11 mm	780 nm	Contact Supplier	$ 99.00
Product Code Wavelength Range 780 nm Center Wavelength 780 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	12.7 mm (0.5")	450 - 680 nm	Contact Supplier	$ 729.75
Product Code Wavelength Range 450 - 680 nm Center Wavelength 450 - 680 nm Reflectance < 0.8% (Average) Transmittance > 90% Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 0.15 - 0.35 mm Retardance λ/2 Clear Aperture 12.7 mm (0.5") Substrate Magnesium Fluoride Quartz Damage Threshold Pulsed > 3 J/cm² (10 ns, 1064 nm) Shape Round Supplier Location United Kingdom; Rhode Island, USA See product details More from Knight Optical
Achromatic Half Waveplate	λ/2	Ø 17 mm	1550 nm	Contact Supplier	$ 341.00
Product Code Wavelength Range 1550 nm Center Wavelength 1550 nm Reflectance < 0.5% Dimensions Ø 25.4 mm (1") 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 Surface Quality 20-10 scratch-dig Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 11 mm	633 nm	4 - 5 days	$ 182.00
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 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	355 nm	4 - 5 days	$ 127.00
Product Code Wavelength Range 355 nm Center Wavelength 355 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, λ/4	Ø 12.5 mm	400 - 700 nm	12 weeks	$ 1064.00
Product Code Wavelength Range 400 - 700 nm Center Wavelength 400 - 700 nm Transmittance 86% Diameter 25 mm (Outer) Dimensions Ø 25 x 10 mm Thickness 10 mm Retardance λ/2, λ/4 Clear Aperture Ø 12.5 mm Substrate Crystalline Quartz Magnesium Fluoride Mount Non-Threaded Mount, 25 mm Shape Round Surface Quality 40-20 scratch-dig Center Thickness 0.96 mm Length 10 mm Surface Irregularity λ/4 (633 nm, Flatness) λ, 4λ (Flatness) Supplier Location Pennsylvania, USA See product details More from Excelitas
Achromatic Half Waveplate	λ/2	Ø 17 mm	852 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 852 nm Center Wavelength 852 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	> 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 17 mm	589 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 589 nm Center Wavelength 589 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	17.7 mm (0.7")	985 - 840735 nm	1 - 2 days	$ 1040.00
Product Code Wavelength Range 985 - 840735 nm Center Wavelength 735 - 985 nm 840 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	10.1 mm (0.4")	700 - 630555 nm	1 - 2 days	$ 825.00
Product Code Wavelength Range 700 - 630555 nm Center Wavelength 555 - 700 nm 630 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 17 mm	800 nm	4 - 5 days	$ 341.00
Product Code Wavelength Range 800 nm Center Wavelength 800 nm Reflectance < 0.5% Dimensions Ø 25.4 mm (1") 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 Surface Quality 20-10 scratch-dig Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2, λ/4	Ø 12.5 mm	400 - 700 nm	12 weeks	$ 1064.00
Product Code Wavelength Range 400 - 700 nm Center Wavelength 400 - 700 nm Transmittance 86% Diameter 25 mm (Outer) Dimensions Ø 25 x 10 mm Thickness 10 mm Retardance λ/2, λ/4 Clear Aperture Ø 12.5 mm Substrate Crystalline Quartz Magnesium Fluoride Mount Non-Threaded Mount, 25 mm Shape Round Surface Quality 40-20 scratch-dig Center Thickness 0.56 mm Length 10 mm Surface Irregularity λ/4 (633 nm, Flatness) λ, 4λ (Flatness) Supplier Location Pennsylvania, USA See product details More from Excelitas
Achromatic Half Waveplate	λ/2	Ø 11 mm	1064 nm	4 - 5 days	$ 182.00
Product Code Wavelength Range 1064 nm Center Wavelength 1064 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 17 mm	780 nm	Contact Supplier	$ 152.00
Product Code Wavelength Range 780 nm Center Wavelength 780 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 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 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	Ø 11 mm	800 nm	Contact Supplier	$ 99.00
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") 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	> 34 mm	550 - 750 nm	In stock	$ 3215.00
Product Code Wavelength Range 550 - 750 nm Coating BBAR (550 - 750 nm) Reflectance < 0.75% (550 - 750 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 17 mm	355 nm	4 - 5 days	$ 211.00
Product Code Wavelength Range 355 nm Center Wavelength 355 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	12.7 mm (0.5")	1200 - 1650 nm	Contact Supplier	$ 729.75
Product Code Wavelength Range 1200 - 1650 nm Center Wavelength 1200 - 1650 nm Reflectance < 0.8% (Average) Transmittance > 90% Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 0.15 - 0.35 mm Retardance λ/2 Clear Aperture 12.7 mm (0.5") Substrate Magnesium Fluoride Quartz Damage Threshold Pulsed > 3 J/cm² (10 ns, 1064 nm) Shape Round Supplier Location United Kingdom; Rhode Island, USA See product details More from Knight Optical
Achromatic Half Waveplate	λ/2	Ø 17 mm	532 nm	4 - 5 days	$ 341.00
Product Code Wavelength Range 532 nm Center Wavelength 532 nm Reflectance < 0.5% Dimensions Ø 25.4 mm (1") 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 Surface Quality 20-10 scratch-dig Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics