issue date：2016-3-31 15:35:44 visit frequency：3330
Low order waveplates are multiple order plates with a relatively small order, keeping the mentioned detrimental effects low. The low(multiple) order waveplate is designed to give a retardance of several full waves, plus the desired fraction. This results in a single, physically robust component with desired performance. However, even small variation in wavelength or temperature will result in significant changes in the desired fractional retardance.
Low order waveplates are much better than the multi order waveplates because of its thinner thickness(less than 0.5mm). Better temperature(38 deg C), wavelength(1.5nm) and incident angle(4.5 deg) bandwidth and high damage threshold make it widely used in common application. Also it is economical choice. Low order waveplates are made of one piece of 90-degree cut Quartz, with the proper thickness to achieve the desired retardance.
|
Material |
Crystal Quartz |
|
Parallelism |
<1 arc second |
|
Diameter Tolerance |
+0.0/-0.2mm |
|
Surface Quality |
20/10 scratches & dig |
|
Retardation Tolerance |
<λ/500 |
|
Wavefront Distortion |
λ/8@632.8nm |
|
Clear Aperture |
>90% |
|
Coating |
R<0.2% at central wavelength |
|
Damage Threshold |
>500 MW/cm2 |
|
WaveLength Range |
240～2100 nm |
|
Standard Wavelength |
255, 355, 532, 632.8, 780, 808, 850, 980, 1064, 1310, 1480, 1550 nm |
Single Plate Low Order Waveplate
|
Diameter(mm) |
Quarter Waveplate (Part No.) |
Half Waveplate (Part No.) |
|
|
10.0 |
WPLQ210 |
WPLH210 |
|
|
12.7 |
WPLQ212 |
WPLH212 |
|
|
15.0 |
WPLQ215 |
WPLH215 |
|
|
20.0 |
WPLQ220 |
WPLH220 |
|
|
25.4 |
WPLQ225 |
WPLH225 |
|
|
30.0 |
WPLQ230 |
WPLH230 |
