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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 17 mm	400 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 400 nm Center Wavelength 400 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	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	11.5 mm	610 - 850 nm	In stock	$ 935.00
Product Code Wavelength Range 610 - 850 nm Coating BBAR (610 - 850 nm) Reflectance < 0.7% (610 - 850 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 8 mm Parallelism < 1' Retardance λ/2 Clear Aperture 11.5 mm Substrate Crystalline Quartz Magnesium Fluoride Damage Threshold Pulsed 2 J/cm² (8 ns, 1064 nm) Shape Round Surface Quality 20-10 scratch-dig Transmitted Wavefront Error λ/4 (633 nm, P-V) Damage Threshold CW 500 kW/cm² Thickness Tolerance ±0.1 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	$ 176.00
Product Code Wavelength Range 589 nm Center Wavelength 589 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 10 mm (0.39")	690 - 1200 nm (Coating Range)	2 weeks	$ 952.12
Product Code Wavelength Range 690 - 1200 nm (Coating Range) Reflectance < 0.5% (690 - 1200 nm, Average, per Surface) Diameter 12.7 mm (0.5") 25.4 mm (1", Mounted) 12.7 mm (Unmounted) Dimensions Ø 12.7 mm (0.5") Thickness 3 mm (Mount) Retardance λ/2 Clear Aperture Ø 10 mm (0.39") Substrate Crystalline Quartz Magnesium Fluoride Mount Non-Threaded Mount, 1" Shape Round Surface Quality 20-10 scratch-dig Transmitted Wavefront Error < λ/8 (633 nm, RMS) Beam Deviation < 10'' Retardance Accuracy < λ/300 Angle of Incidence 0° Diameter Tolerance ±0.1 mm Supplier Location New Jersey, USA See product details More from Thorlabs
Achromatic Half Waveplate	λ/2	10.1 mm (0.4")	400 - 1800 nm (Center Wavelength)	1 - 2 days	$ 919.00
Product Code Wavelength Range 400 - 1800 nm (Center Wavelength) Center Wavelength 400 - 1800 nm (Specify at Checkout) 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	Ø 11 mm	400 nm	4 - 5 days	$ 182.00
Product Code Wavelength Range 400 nm Center Wavelength 400 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	10.1 mm (0.4")	835 - 720630 nm	1 - 2 days	$ 825.00
Product Code Wavelength Range 835 - 720630 nm Center Wavelength 630 - 835 nm 720 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	532 nm	Contact Supplier	$ 182.00
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 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	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	Ø 10 mm (0.39")	400 - 800 nm (Coating Range)	In stock	$ 952.12
Product Code Wavelength Range 400 - 800 nm (Coating Range) Reflectance < 0.5% (400 - 800 nm, Average, per Surface) Diameter 12.7 mm (0.5") 25.4 mm (1", Mounted) 12.7 mm (Unmounted) Dimensions Ø 12.7 mm (0.5") Thickness 1.07 mm (Mount) Retardance λ/2 Clear Aperture Ø 10 mm (0.39") Substrate Crystalline Quartz Magnesium Fluoride Mount Non-Threaded Mount, 1" Shape Round Surface Quality 20-10 scratch-dig Transmitted Wavefront Error < λ/8 (633 nm, RMS) Beam Deviation < 10'' Retardance Accuracy < λ/300 Angle of Incidence 0° Diameter Tolerance ±0.1 mm Supplier Location New Jersey, USA See product details More from Thorlabs
Achromatic Half Waveplate	λ/2	11.5 mm	465 - 610 nm	In stock	$ 935.00
Product Code Wavelength Range 465 - 610 nm Coating BBAR (465 - 610 nm) Reflectance < 1% (465 - 610 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 8 mm Parallelism < 1' Retardance λ/2 Clear Aperture 11.5 mm Substrate Crystalline Quartz Magnesium Fluoride Damage Threshold Pulsed 2 J/cm² (8 ns, 1064 nm) Shape Round Surface Quality 20-10 scratch-dig Transmitted Wavefront Error λ/4 (633 nm, P-V) Damage Threshold CW 500 kW/cm² Thickness Tolerance ±0.1 mm Coating Features Broadband Supplier Location New Jersey, USA See product details More from Edmund Optics
Achromatic Half Waveplate	λ/2	30.5 mm (1.2")	1200 - 1650 nm	1 - 2 days	$ 1936.00
Product Code Wavelength Range 1200 - 1650 nm Center Wavelength 1200 - 1650 nm 1400 nm Thickness 12.7 mm (0.5") Retardance λ/2 Clear Aperture 30.5 mm (1.2") 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	> 8 mm	340 - 560 nm	In stock	$ 795.00
Product Code Wavelength Range 340 - 560 nm Coating BBAR (340 - 560 nm) Reflectance < 0.75% (340 - 560 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
Achromatic Half Waveplate	λ/2	30.5 mm (1.2")	700 - 630555 nm	1 - 2 days	$ 1936.00
Product Code Wavelength Range 700 - 630555 nm Center Wavelength 555 - 700 nm 630 nm Thickness 12.7 mm (0.5") Retardance λ/2 Clear Aperture 30.5 mm (1.2") 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	$ 152.00
Product Code Wavelength Range 950 nm Center Wavelength 950 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 12.7 mm (0.5")	450 - 680 nm (Operating Wavelength)	4 - 5 days	$ 528.00
Product Code Wavelength Range 450 - 680 nm (Operating Wavelength) Center Wavelength 450 - 680 nm Reflectance < 0.8% Parallelism < 1' Retardance λ/2 Clear Aperture Ø 12.7 mm (0.5") Substrate Magnesium Fluoride Single Crystal Quartz Damage Threshold Pulsed > 3 J/cm² (10 ns, 1064 nm) Surface Quality 40-20 scratch-dig 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	Ø 17 mm	400 nm	Contact Supplier	$ 152.00
Product Code Wavelength Range 400 nm Center Wavelength 400 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	> 8 mm	550 - 750 nm	In stock	$ 795.00
Product Code Wavelength Range 550 - 750 nm Coating BBAR (550 - 750 nm) Reflectance < 0.75% (550 - 750 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