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Unpolarized beam Motorized Laser Power Attenuators

Unpolarized beam Motorized Laser Power Attenuators

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Advanced Motorised Laser Power attenuator LPA-U is a unique device designed for unpolarised laser power control with integrated controller and absolute position encoder.

The LPA-U is produced in the UV, visible and NIR spectral ranges, from 343 nm to 2000 nm and 10,6 um. This device is combined with the unique mechanical robust design which ensures high repeatability.

Clear Aperture, mm	Ø12
Configuration	Angular filter + AR/AR coated Fused silica window
Polarization	suitable with polarized and unpolarized beam
Laser Damage Threshold, J/cm²	>10 [J/cm²] (10 ns @ 1064 nm)
Open-close time	<500
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
Bandwidth, nm	5 - 10
Dimensions, mm	85 x 93.5 x 135
Controller type	Integrated
Communication	Using ASCII commands described in manual
Software platform	LPA software
Input voltage from external power supply	DC 12 V
Control interfaces	USB, RS232
Transmission speed	Up to 115,200 bits/s (RS-232); full speed (USB 2.0)
Working Temperatures, °C	10 to 40
Mounting Thread	M6 on both sides, M4 on the bottom side
Housing material	Anodized aluminum

Description

Details

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

What’s in the box?

Integrated motorized laser power attenuator
Software
Power supply DC 12V
USB (1.5 m) cable

Available accessories

RS232 cables: 1.8 m, 5 m, 10 m, 15m

Documents

LPA-U Drawing Size: (359.09 KB)

Features

Designed for unpolarised laser beam
Up to 200W of average laser power
Beam offset compensated
Integrated controller
Absolute position encoder - no homing required
High accuracy ±0,005 deg
Robust design with water-cooling
Clear aperture - ø12 mm
Fast adjustment - less than 0,5 sec (min to max)
High damage threshold: up to 10J/cm2 (10 ns @ 1064 nm)

Applications

Precise laser micromachining
Laser power stabilization
Research

Name	Design Wavelength, nm	Attenuation range	LIDT	Contrast	Price	Quantity
LPA-U-1064	1064	2.5 - 93 %	10 J/cm² (10 ns @ 1064 nm)	1:40	US$4,050.00
LPA-U-1070	1070	2 - 95 %	10 J/cm² (10 ns @ 1064 nm)	1:50	US$4,050.00

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