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| Dual-Wavelength Waveplate |
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This 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 and rotates the
plane of polarization by 90. A full wave plate has a net retardation
of 2 and rotates the plane of polarization by 180. 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 |
λ/ 10 |
| Diameter |
25.4 + 0.00 / - 0.20 mm |
| Thickness |
1.0 mm |
| Polarization state purity |
98% |
| Parallelism |
1.0 arc sec |
| Clear Aperture |
20.0 mm |
| Mount OD |
Φ38.1 mm |
| AR Coating |
R < 0.25% per surface |
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| Specifications |
| Material: |
Crystal Quartz |
| Surface Quality: |
10 / 5 |
| Transmitted Wavefront: |
λ / 10 |
| Diameter Tolerance: |
+ 0.00 / - 0.20 mm |
| Retardation Tolerance: |
λ /300 at 20 ℃ |
| Parallelism: |
< 1.0 arc sec |
| Clear Aperture: |
90% |
| AR Coating: |
R < 0.25% per surface |
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