Precision Linear Polarizer

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Precision Linear Polarizer

Meadowlark Optics manufactures Precision Linear Polarizers using dichroic sheet polarizer material laminated between high quality glass substrates. For visible wavelength polarizers, this construction produces a peak-to-valley transmitted wavefront distortion of less than  λ/5. Various polarizer materials are used to cover wavelengths within 320 and 2000 nm. Both visible and near infrared polarizers are supplied with a high-efficiency, broadband antireflection (AR) coating; single-layer AR coatings are optional on our ultraviolet polarizers. Both mounted and unmounted Precision Linear Polarizers are offered as standard products. To facilitate use, our Precision Linear Polarizers have the transmission axis marked on the part.

  • High extinction ratios
  • Excellent surface quality
  • Wide angular acceptance
  • Low transmitted wavefront distortion
  • Ultraviolet, visible, near infrared wavelengths

Specifications - Precision Linear Polarizer
 Substrate Material
Ultraviolet
Visible
Near Infrared
UV Grade Fused Silica
N-BK7
N-BK7
Polarizer Material Dichroic Polymer
Transmitted Wavefront Distortion  (P-V @ 632.8 nm)
Ultraviolet
Visible
Near Infrared
≤ λ/2
≤ λ/5
≤ λ/2
Surface Quality (scratch-dig) 40-20
Beam Deviation
Ultraviolet
Visible
Near Infrared
≤ 2 arc-min
≤ 1arc-min
≤ 2 arc-min
Reflectance (per surface, at normal incidence)
Ultraviolet
Visible
Near Infrared
~4.25% (uncoated)
≤ 0.5%
≤ 0.5%
Storage Temperature
Ultraviolet
Visible
Near Infrared
-50˚C to +50˚C
-50˚C to +50˚C
-50˚C to +50˚C  
Operating Temperature
Ultraviolet
Visible
Near Infrared
-50˚C to +50˚C
-50˚C to +50˚C
-50˚C to +50˚C
Laser Damage Threshold 1W/cm2, CW
200 mJ/cm2, 20 ns, visible
2 J/cm2, 20 ns, 1064 nm
Prolonged exposure to strong ultraviolet radiation may damage these polarizers.
Custom coatings are available. Please contact your Meadowlark Optics sales engineer for a custom quote.

 

Ordering Information - Precision Linear Polarizers
Mounted
Clear
Aperture
in. [mm]
Thickness
± 0.020 in.
[±0.51 mm]
Diameter
± 0.005 in.
[± 0.13 mm]
Part Number
0.40
[10.2]
0.25
[6.35]
Ø1.00
[Ø25.4]
DPM-050-UV1
0.40
[10.2]
0.25
[6.35]
Ø1.00
[Ø25.4]
DPM-050-VIS
0.40
[10.2]
0.25
[6.35]
Ø1.00
[Ø25.4]
DPM-050-NIR1
0.40
[10.2]
0.25
[6.35]
Ø1.00
[Ø25.4]
DPM-050-NIR2-n
0.70
[17.8]
0.35
[8.9]
Ø1.00
[Ø25.4]
DPM-100-UV1
0.70
[17.8]
0.35
[8.9]
Ø1.00
[Ø25.4]
DPM-100-VIS
0.70
[17.8]
0.35
[8.9]
Ø1.00
[Ø25.4]
DPM-100-NIR1
0.70
[17.8]
0.35
[8.9]
Ø1.00
[Ø25.4]
DPM-100-NIR2-n
1.20
[30.5]
0.50
[12.7]
Ø2.00
[Ø50.8]
DPM-200-UV1
1.20
[30.5]
0.50
[12.7]
Ø2.00
[Ø50.8]
DPM-200-VIS
1.20
[30.5]
0.50
[12.7]
Ø2.00
[Ø50.8]
DPM-200-NIR1
1.20
[30.5]
0.50
[12.7]
Ø2.00
[Ø50.8]
DPM-200-NIR2-n
Unmounted
Clear
Aperture
in. [mm]
Thickness
± 0.020 in.
[±0.51 mm]
Diameter
+0/-0.010 in
[+0/-0.25mm]
Part Number
0.40
[10.2]
0.13
[3.3]
Ø0.50
[Ø12.7]
DP-050-UV1
0.40
[10.2]
0.13
[3.3]
Ø0.50
[Ø12.7]
DP-050-VIS
0.40
[10.2]
0.14
[3.6]
Ø0.50
[Ø12.7]
DP-050-NIR1
0.40
[10.2]
0.14
[3.6]
Ø0.50
[Ø12.7]
DP-050-NIR2-n
0.80
[20.3]
0.26
[6.6]
Ø1.00
[Ø25.4]
DP-100-UV1
0.80
[20.3]
0.26
[6.6]
Ø1.00
[Ø25.4]
DP-100-VIS
0.80
[20.3]
0.27
[6.9]
Ø1.00
[Ø25.4]
DP-100-NIR1
0.80
[20.3]
0.27
[6.9]
Ø1.00
[Ø25.4]
DP-100-NIR2-n
Custom AR coatings are available on all polarizers.
For NIR2 polarizers, choose from the following AR coatings:
NIR2 - 1 covers 650 - 950 nm
NIR2 - 2 covers 900 - 1250 nm
NIR2 - 3 covers 1200 - 1700 nm