home products Beam delivery devices Laser power attenuators Motorized laser power attenuators LPA

Motorized laser power attenuators LPA

Main features

Robust design

Damage threshold up to 10 J/cm² (10 ns @ 1064 nm)

Adjustable polarizer angle ±2 deg

Clear aperture 18 mm

External controller included

Intuitive software

175,543 steps in full rotation

± 0,05 % laser power accuracy

Adjustment time <0,2 sec (min to max)

Application examples

Laser machining

Research

Laser power control and attenuation

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Description
Video
Standard specifications
Downloads
Additional accessories

4Lasers designs and manufactures motorized laser power attenuators for laser power control. LPA could be produced for use in the UV, visible, and NIR spectral ranges from 250 nm to 2000 nm. These devices feature a large clear aperture dedicated for considerable beam application.

All-optical elements of these laser power attenuators are made for high LIDT and provide a 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 out through the output window to an external beam dump (optional) in order to avoid any thermal effects or stress in the housing of the LPA device. An exit laser beam has a 2,25 mm beam offset.

What’s in the box?

Motorised laser power attenuator

Controller

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

Motorized laser power attenuator specifications
OPTICAL	Clear input aperture	⌀18 mm
	Clear output aperture	⌀18 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
	Resolution	175,543 μsteps in full rotation (0,002 deg, 7,4 arcsec, 0,035 mrad)
	Repeatability (after 10,000 positions without homing)	±10 μsteps (± 0,02 deg, less than ± 0,05 %)
	Available coatings	1064 nm, 1030 nm, 532 nm, 515nm, 355 nm, 343 nm, custom
	Bandwidth	5-10 nm
CONTRAST	1030/1064 nm	1:1000
	515/532 nm	1:1000
	334/355 nm	1:500
	257/266nm	1:200
MECHANICAL	LPA mechanical dimensions	76 x 36 x 58 mm
	LPA with beam dump mechanical dimensions	76 x 52 x 58 mm
	Controller mechanical dimensions	125 x 53 x 31 mm
ELECTRONIC	Communication	Using ASCII commands described in manual
	Cable length from LPA to the controller	1,5 m
	Software interface	LPA software
	Input voltage	DC 12 V
	Control interface	USB, RS232, Ethernet
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