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Main features

  • Integrated controller
  • Absolute encoder – no homing required
  • High accuracy – ±0,004 deg (less than ± 0,01 % of laser power)
  • Resolution – 0,002 deg, 7,4 arcsec, 0,035 mrad
  • Fast adjustment – less than 0,2 sec (min to max)
  • High damage threshold: up to 10J/cm2 (10 ns @ 1064 nm)
  • Adjustable polarizer angle


Application examples

  • Precise laser micromachining
  • Laser power stabilization
  • Research



Advanced laser power attenuator LPA-A is a compact motorized device for laser power control with an integrated controller and absolute encoder. The LPA-A is produced in the UV, visible, and NIR spectral ranges, from 250 nm to 2000 nm.

This device is combined with a unique mechanical design which ensures repeatability and high stability of performance.

All-optical components of the LPA-A are made for high LIDT and provide a stable and reliable performance even when using them with high power lasers in industrial applications.
A secondary laser beam from the laser power attenuator unit can be rejected to an external beam dump. The beam dump is used for avoiding any thermal effects or stress in the housing of the LPA-A device.


What’s in the box?

  Integrated motorised laser power attenuator

  Software

  Power supply DC 12V

  USB (1.5 m) cable


Available accessories

  Attachable beam dump <6W with coated protective window

  Separated beam dump <30W

  RS232 cables: 1,8 m, 5 m, 10 m, 15m

  DIN35 rail adapter



Standard Specifications

Motorized laser power attenuator specifications


Clear input aperture                       ⌀15 mm

Clear output aperture                    ⌀15 mm

Optical configuration                    λ/2 ZO Waveplate + High contrast brewster type thin film polarizer

Power attenuation range             0,1 – 98%

LIDT coating                                    >10 [J/cm2] (10 ns @ 1064 nm)

Close to open time                         <0,2 sec

Accuracy                                           ±0,005 deg (± 18 arcsec, 0,087 mrad, less than ±0,01%)

Resolution                                        175,543 μsteps in full rotation (0,002 deg, 7,2 arcsec, 0,035 mrad)

Absolute position encoder           YES

Available coatings           1064 nm, 1030 nm, 532 nm, 515nm, 355 nm, 343 nm, custom

Bandwidth                         5-10 nm



LPA-A mechanical dimensions                                   86 x 47 x 58 mm

LPA with beam dump mechanical dimensions       86 x 64 x 58 mm

Controller                                                                      Integrated



Communication Trough ASCII commands (described in manual)

Software interface          LPA software

Input voltage                    DC 12 V

Control interface             USB, RS232, Ethernet

Transmission speed         Up to 115,200 bits/s (RS-232); full speed (USB 2.0)



Operating temperature, Celsius                 +10 to +40

Mounting holes                                             M6 on both sides, M4 on the bottom side

Beam Dump                                                    Dissipation Power (avg) at room temperature <6W

Housing material                                           Anodized aluminum



For more information