Beam Separator

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Beam Separator

Meadowlark Optics’ Beam Separators are designed for laser line applications and consist of a true zero-order quarter-wave retarder aligned with its fast axis at 45° to the transmission axis of a Laser Line Beamsplitting Polarizer. The transmitted beam is circularly polarized, regardless of the input beam polarization state. Our true zero-order Precision Retarders are quarter-wave within ± λ/350 and aligning the fast axis to within 1° ensures greater than 99.8% source isolation from specular back reflections.

  • High isolation
  • Large diameters available
  • Low transmitted wavefront distortion

Specifications - Beam Separator
Standard Wavelengths 532, 632.8, 670, 780, 850, 1064, and 1550 nm
Substrate Material N-BK7
Transmitted Wavefront Distortion(P-V @ 632.8 nm) ≤ λ/5
Surface Quality (scratch-dig) 40-20
Beam Deviation ≤ 3 arc-min
Reflectance (per surface, at normal incidence) ≤ 0.5%
Acceptance Angle ± 2˚
Storage Temperature Range -20˚C to +50˚C
Operating Temperature -20˚C to +50˚C
Laser Damage Threshold 500 W/cm2, CW 300 mJ/cm2, 10 ns, visible 200 mJ/cm2, 10 ns, 1064 nm
 

 

Ordering Information - Beam Separator
Clear
Aperture
in. [mm]
Cube Dimensions
± 0.020 in.
[± 0.51 mm]
Part Number
0.40
[10.2]
0.50 × 0.50 × 0.50
[12.7 x 12.7 x 12.7]
BS-050-λ
0.80
[20.3]
1.00 × 1.00 × 1.00
[25.4 × 25.4 × 25.4]
BS-100-λ
Please substitute your wavelength in nanometers for λ.
Custom sizes and wavelengths, over 400-1600 nm are available.
Please contact our Sales Engineers to obtain a custom quote.

 

Learn More
White Paper:   Finding the Optimal Polarizer