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
Description
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
OPTICAL
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
MECHANICAL
LPA-A mechanical dimensions 86 x 47 x 58 mm
LPA with beam dump mechanical dimensions 86 x 64 x 58 mm
Controller Integrated
ELECTRONIC
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)
CONDITIONS
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