home products Beam delivery devices Laser power attenuators Unpolarized beam motorized laser power attenuators LPA-U

Unpolarized beam motorized laser power attenuators LPA-U

Features and advantages

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)

Application examples

Precise laser micromachining

Laser power stabilization

Research

Request custom

Description
Standard specifications
Downloads
Additional accessories

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.

All optical components of the LPA-U are made for high LIDT and provide stable and reliable performance even using them with high power lasers in industrial applications.

A secondary laser beam from laser power attenuator unit is rejected to an internal 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 motorised 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

Motorized laser power attenuator specifications
OPTICAL	Clear input aperture	⌀12 mm
	Clear output aperture	⌀12 mm
	Optical configuration	Angular filter + AR/AR coated Fused silica window
	Power attenuation range	2 - 95%
	LIDT coating	>10 [J/cm²] (10 ns @ 1064 nm)
	Close to open time	<0,5 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, 1070 nm, custom
	Bandwidth	5-10 nm
MECHANICAL	LPA-U mechanical dimensions	85 x 93,5 x 135 mm
MECHANICAL	Controller	Integrated
ELECTRONIC	Communication	Trough ASCII commands (described in manual)
	Software interface	LPA software
	Input voltage	DC 12 V
	Control interface	USB, RS232
	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
	Housing material	Anodized aluminum

Manuals:

LPA-U Manual v2.3

Drawings:

LPA-U v1.1

CAD:

LPA-Uv1.1 STEP

Available accessories
	SKU	PRICE
USB cable 3 m	15435	32 €
RS232 cable 1,8 m	17616	22 €
RS232 cable 5 m	17631	27 €
RS232 cable 10 m	13483	32 €
RS232 cable 15 m	17632	37 €

Order your item

Item model Design wavelength, nm Attenuation range Clear input aperture, mm Clear output aperture, mm Dimensions (H x W x L) Polarization SKU price Downloads quantity

LPA-U

1070

2-95%

85 x 93,5 x 135 mm

suitable with polarized and unpolarized beam

21710

3500 €

LPA-U

1064

2,5-93%