These crystalline delay blades allow for detailed quantitative studies.
These blades are cut from an anisotropic quartz to obtain a quarter or half-wave effect at the specified wavelength.
Common technical specifications:
. Material: quartz
. Dimensions: Ø 100 mm
. Useful diameter: 18 mm
. Graduations: engraved every 1° on 360°
. Mount: anodized aluminum
. Rotation adjustment: ball-bearing
. Holding: rod Ø 10mm L100 mm
632.8 nm blades:
This wavelength corresponds to use with a polarized He-Ne laser. They can also be used with a 635 nm diode laser source.
- Lambda/4 blade at 632.8 mm (ref. 202 380)
- Lambda/2 blade at 632.8 mm (ref. 202 382)
589 nm blades:
The use of a Sodium source has the main advantage over the laser of the stability of its intensity (after the heating cycle).
- Lambda/4 blade at 589 mm (ref. 202 384)
- Lambda/2 blade at 589 mm (ref. 202 386)