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Thin Film Polarizers separate the s- and p-polarization components. They are designed for use in high energy laser applications. Due to a high damage threshold, Thin Film Polarizers are used as an alternative to Glan Laser Polariser or Polarising Beamsplitter Cube.
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描述
Typical applications are intracavity Q-switch hold-off polarizer or extracavity attenuator for Nd:YAG lasers.
  For optimal transmission Thin Film Polarizer should be mounted in an appropriate holder for angular adjustment.
  Thin Film Polarizers are used in any Q-switch Pulsed lasers both in Industrial and medical systems, where they serve as intracavity Q-switch hold-off polarizers.
  They also can be used as extracavity attenuator for Nd:YAG lasers.
ADVANTAGE:
● Provide linear polarization of laser radiaton
● Rs/Tp:>99.8/95.0 % for standard thin film polarizers or Rs/Tp:>99.8/98.0 % for high transmittance thin film laser polarizers
● High damage threshold reaching 10 J/cm2
● High Extinction ratio —— 1000:1 and 500:1
● Wide working temperature (-40℃—— +60℃)
Material
BK7 or Fused Silica
Parallelism
≤20″
Wavelength Range
470nm-1350nm
Flatness
λ/8@633nm
Extinction Ratio
>1000:1 ,  >500:1
Wavefront Distortion
λ/8@633nm
Diameter Tolerance
+0/-0.1mm
Chamfer
≤0.2mmx45°
Thickness Tolerance
+/-0.2mm
Chips
≤0.1
Scratch/Dig
60/40
Clear Aperture
≥90%
Coatings
Tp>98% Ts<0.2  brewster angle Tp>95% Ts<0.2  brewster angle
Damage threshold
10J/cm² 10ns 10Hz at 1064nm

 

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