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Laser AccessoriesManual Attenuators

Large Aperture Attenuator

Large Aperture Attenuator

Laser AccessoriesManual Attenuators

Large Aperture Attenuator

Clear aperture

30 mm

Bandwidth

Up to ±50 nm

Optimization

Reflection or transmission type

Attenuation range (Tmin-Tmax) @ CWL

0.3-99% or 0.1-70%
or 4-96%

Typical applications

High power and ultrafast lasers

Damage threshold

>5 J/cm² @ 1064 nm, 10 ns, 10 Hz, >100 mJ/cm² @ 800 nm,
100 fs, 1 kHz

Dimensions (L x W x H)

299 x 135 x 70 mm – ultrafast reflection type, 147 x 136 x 60 mm – transmission type

Configuration

λ/2 ZO waveplate +
1x or 2x Thin Film polarizers, λ/2 Achromatic waveplate + 2x Broadband (Ultrafast) Thin Film polarizers

Typical Items Laser Power Control Units

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Typical Items for Large Aperture Attenuator

Wavelength, nm Bandwidth, nm Configuration Optimization Attenuation range*
(Tmin-Tmax) @ CWL		 Product ID
515 ±5 λ/2 ZO waveplate + 2x TFP Reflection 0.3-99% LAT-R-0515
λ/2 ZO waveplate + TFP Transmission 0.5-95% LAT-T-0515
532 ±5 λ/2 ZO waveplate + 2x TFP Reflection 0.3-99% LAT-R-0532
λ/2 ZO waveplate + TFP Transmission 0.5-95% LAT-T-0532
800 ±50 λ/2 Achromatic waveplate +
2x Broadband (Ultrafast) TFP		 Reflection contrast 0.1-70% LATU-R2-0800
λ/2 Achromatic waveplate +
2x Broadband (Ultrafast) TFP		 Reflection 4-96% LATU-R1-0800
1030 ±10 λ/2 ZO waveplate + 2x Broadband TFP R Reflection 0.3-99% LAT-R-1030
λ/2 ZO waveplate + Broadband TFP Transmission 0.5-95% LAT-T-1030
1064 ±5 λ/2 ZO waveplate + 2x TFP Reflection 0.3-99% LAT-R-1064
λ/2 ZO waveplate + TFP Transmission 0.5-95% LAT-T-1064

The main feature of Large Aperture Attenuators is larger than 30 mm diameter clear aperture. These incorporate a rotating λ/2 phase waveplate and one or two Thin Film Polarizers that separate s-polarized and p-polarized beams in parallel directions. The polarizers are housed in a specially designed optomechanical holder which is mounted together with a precision waveplate holder. Pure p-polarization should be selected for maximum transmission and pure s-polarization for maximum attenuation. The intensity ratio of the separated beams is continuously tuned by rotating the waveplate in the holder.

Custom wavelengths are available upon request.

Contact us and we will find a solution for your beam attenuation, power control and beamsplitting needs. We can also recommend compatible optical components for your beam delivery applications.

Features

  • Large input aperture
  • Easy operated manual design
  • Ideal for femtosecond and high power laser applications
  • Two parallel p-pol and s-pol output beams
  • Interchangeable optics

Related products

Watt Pilot – Motorized Attenuator, Enhanced Version
PowerXP Compact Motorized Attenuator
Crystalline Quartz Waveplates
Brewster Type Thin Film Polarizers
Achromatic (Broadband) Waveplates
Broadband Ultrafast Thin Film Polarizers

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