The polarization rotator rotates the polarization at a fixed angle, which is a good substitute for the delay wave plate of narrow-band laser.
The rotation of polarization is caused by a property called optically active, which is inherent in quartz crystals and other enantiomers. There are “right-handed” and “left-handed” quartz, which rotate the polarization clockwise or counterclockwise respectively.
Because the rotator is c-cut, the rotation of polarization is independent of the rotation of the assembly around the optical axis, so the assembly is not sensitive to alignment. The only requirement is that the incident beam must be perpendicular to the aperture of the rotator.
CRYLINK provides rotators with fixed polarization rotation angles of 45 ° or 90 ° including antireflective coatings at design wavelengths. For more convenient use, all rotors are mounted on black anodized aluminum base.
Parameter
Basic Parameters
| Product ID | PB09001 |
| Wavelength range | 343 – 1064 nm |
| Surface quality, S-D | 20-10 |
| Transmitted wavefront distortion, P-V | <λ/8 @ 632.8 nm |
| Polarization rotation | 45° or 90° |
| Rotation accuracy | <3 arcmin |
| Anti-reflective coating | Ravg<0.2% Every side |
| LIDT | >10 J/cm² @ 1064 nm, 10 ns, 10 Hz |
| Mounting | Black, white anodized metal mount |
| Clear Aperture，mm | Wave-length, nm | Polarization rotation (clockwise) ° | Installation thickness，mm |
| >18 | 355 | 45 90 | 6 |
| >18 | 532 | 45 90 | 6 |
| >18 | 1064 | 45 90 | 12 |
Application
- No special adjustment is required
- Coated with anti reflective coating
- Rotate the polarization at a fixed angle
- Provides a custom rotation angle
- Rotate counter clockwise as required
- Rotator not installed as required
- Rotator for customized wavelength
Feature
- The substitute of delay wave plate for narrow band laser
