
Analyzer, Testing Equipment
61-6875-77 Laser Line Plate Half Mirror 157nm φ30mm PSMH-30C03-P-157
Product Description
Product Model: 61-6875-77Product Brand: SIGMAKOKI CO., […]
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Product Details
Product Model: 61-6875-77
Product Brand: SIGMAKOKI CO., LTD.
Features
- Half mirror for ultraviolet laser and YAG laser.
- We offer a wide range of wavelengths from vacuum ultraviolet to infrared.
- The surface is coated with a dielectric multilayer film and the back is coated with an anti-reflection film, resulting in little loss of light.
- There are two types: a parallel plane type, in which the beam does not refract, and a wedge type, in which ghosts and interference due to backside reflections are less affected.
- Since it is a plate type, wavelength dispersion and chromatic aberration generated by transmission through the substrate are small, and weight can be reduced.
- Ultra-wideband, wideband, and cube types are also available separately.
- The wedge type has an arrow pointing toward the surface at the thickest point.
- * When linearly polarized light such as laser light is ***d, the reflectivity and transmittance vary dep***ing on the polarization direction.
- * When strictly adjusting the branching ratio to 1:1, tilt the polarization azimuth to 45 degrees or *** circularly polarized light.
- * Due to the effect of the refractive index and thickness of the substrate, the optical path of the transmitted light is translated by several millimeters relative to the incident light. (In the case of the wedge type, the beam polarization angle of about 30 minutes is added to the translation of the optical path.) * * The transmittance wavelength characteristic changes when ***d at an incident angle other than 45 degrees.
- * If the reflective coating surface cannot be identified, check with the arrow on the side of the substrate.
- * The phase difference of the incident light is not stored in transmitted light or reflected light.
- * Use a wave plate to compensate for the phase difference.
Spec
-
[
common specification]
- Material: BK7 synthetic quartz CaF 2
- Substrate surface accuracy: λ/10 (PSMH-157 is optical polishing)
- Coating: Surface dielectric multi-layered film, Back reflective prevention film
- Incident angle: 45°
- Branching ratio (reflection: Transmission): 1: 1
- Scratch - dig: 10-5 (PSMH-157 is 40-20)
- Effective diameter: 90% of the outer diameter
- [Individual specification]
- Adaptive wavelength: 157nm
- Outer diameter φD: φ30mm
- Thickness t: 3mm
- Material: CaF2
- Parallelism wedge angle W: <3′
- Reflective ratio R transmittance T: R=40±10%
- Laser durability *: 0.5J/cm2
- *Laser pulse width 20ns, Repeat frequency 20Hz
- RoHS conform product
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