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| Dual-Wavelength Waveplate |
Optical Component > Precision
Optics > Waveplates |
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| This dual wavelength multiple order waveplates are
made of 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 and
rotates the plane of polarization by 90 degree. A full wave plate
has a net retardation of 2 and rotates the plane of polarization
by 180 degree. The two harmonics will therefore emerge with crossed
linear polarizations. Optionally, these waveplates may be supplied
mounted in a metal ring. |
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| Material: |
Crystal Quartz |
| Surface Quality |
10 / 5 |
| Transmitted Wavefront |
¦Ë/ 10 |
| Diameter |
+ 0.00 / - 0.20 mm |
| Thickness |
1.0 mm |
| Polarization state purity |
98% |
| Parallelism |
1.0 arc sec |
| Clear Aperture |
90% mm |
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| Specifications |
| Material: |
Crystal Quartz |
| Surface Quality: |
10 / 5 |
| Transmitted Wavefront: |
¦Ë / 10 |
| Diameter Tolerance: |
+ 0.00 / - 0.20 mm |
| Retardation Tolerance: |
¦Ë /300 at 20 ¡æ |
| Parallelism: |
< 1.0 arc sec |
| Clear Aperture: |
90% |
| AR Coating: |
R < 0.25% per surface |
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