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These dual wavelength multiple order waveplates are made a piece of quartz which has been precisely polished. Its thickness is controlled to provide half wave retardation at one wavelength and full wave retardation at a second wavelength.
They are offered for Nd:YAG harmonic wavelengths and can be used to separate the harmonic beams by means of a change in their state of polarization. A half wave plate has a net retardation of π and rotates the plane of polarization by 90°.
A full wave plate has a net retardation of 2π and rotates the plane of polarization by 180°. The two harmonics will therefore emerge with crossed linear polarizations.
 Standard Specifications:
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Optical Material:
Diameter Tolerance:
Wavefront Distortion:
Retardation Tolerance:
Wavelength Range
Clear Aperture:
Parallelism:
Surface Quality:
AR/AR Coating: |
Crystal Quartz
+0.0, -0.2mm
λ/8 peak to peak
<λ/500
240-2100nm
>90%
<1 are second
20-10 scratch and dig
R>0.2% at central wavelengtht |
Standard Dual-Wavelength Waveplates
Diameter (mm) |
λ1(nm) |
λ2(nm) |
Product Number |
25.4 |
355 |
1064 |
UQT-DWPC0201 |
25.4 |
532 |
1064 |
UQT-DWPC0202 |
25.4 |
1064 |
355 |
UQT-DWPC0203 |
25.4 |
1064 |
532 |
UQT-DWPC0204 |
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| Please Contact ultiQuest for other dimensions in prototype and production quantities. |
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| NOTES! |
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Half wave retardation at λ1,Full wave retardation at λ2. |
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The surface flatness is the reflected wavefront distortion of the surface before coating. |
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Be sure to wear laser safety goggles when checking optical path and adjusting optical axis. |
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