Variable Laser Beam Attenuator for Precise Control and Maintenance of a Constant Laser Power

No re-adjustment necessary as beam offset is minimal
Reliability due to high damage threshold
For cw and pulsed lasers of high powers and pulse energies
Available for all excimer and Nd:YAG wavelengths
Replaces ML21xx and ML22xx series

The optical components of our variable laser beam attenuator are a dielectric filter paired with a an optical plate for compensation of the beam offset that is induced by the filter. (translation displacement < 25 µm, angular displacement < 50 µrad). A continuous attenuation of the transmitted laser beam is achieved via gradual changes of the tilt angle (error < 2 mrad) of the dielectric filter in the range between 0° and 45°. A detailed manual is provided.

Horizontal tabs group

Manual adjustment

Via control knob and precise gear box
The tilt angle of the variable laser beam attenuator is adjusted using a control knob. The precise gear box allows for a highly accurate modulation of the laser power. An optional water-cooled heat sink is available as accessory.

Product	Energy Density	Power Density	Substrate	Transmission
VAM193	0,80 J/cm²	100 kW/cm²	FS	5 - 80 %
VAM248	2,00 J/cm²	100 kW/cm²	FS	2 - 90 %
VAM266	2,00 J/cm²	100 kW/cm²	FS	2 - 90 %
VAM308	5,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAM351	8,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAM355	8,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAM514	10,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAM532	10,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAM808	15,00 J/cm²	100 kW/cm²	FS	1 - 95 %
VAM1064	20,00 J/cm²	100 kW/cm²	FS	1 - 98 %

Technical drawings, dimensions and weight

Variable laser beam attenuator with manual adjustment drawing

Without cooling
Width: 100 mm
Height: 80 mm
Length: 174 mm
Weight: 1200 g

Variable laser beam attenuator with manual adjustment cooling drawing

With cooling
Width: 100 mm
Height: 100 mm
Length: 174 mm
Weight: 1200 g

Stepper motor controlled

Variable laser beam attenuator with stepper motor

For use in automated laser production processes.
The tilt angle of the variable laser beam attenuator is adjusted via a stepper motor. The range of 45 ° is spread over 800 microsteps. Operation using a motor controller enables adjustment and use with a computer. An optional water-cooled heat sink is available as accessory.

Product	Energy Density	Power Density	Substrate	Transmission
VAS193	0,80 J/cm²	100 kW/cm²	FS	5 - 80 %
VAS248	2,00 J/cm²	100 kW/cm²	FS	2 - 90 %
VAS266	2,00 J/cm²	100 kW/cm²	FS	2 - 90 %
VAS308	5,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAS351	8,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAS355	8,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAS514	10,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAS532	10,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAS808	15,00 J/cm²	100 kW/cm²	FS	1 - 95 %
VAS1064	20,00 J/cm²	100 kW/cm²	FS	1 - 98 %

Technical drawings, dimensions and weight

Variable laser beam attenuator with stepper motor drawing

Without cooling
Width: 100 mm
Height: 80 mm
Length: 146 mm
Weight: 1200 g

Variable laser beam attenuator with stepper motor cooling drawing

With cooling
Width: 100 mm
Height: 100 mm
Length: 146 mm
Weight: 1200 g

Vacuum applications

In stainless steel housing with flange connectors.
The tilt angle of the variable laser beam attenuator is adjusted via a stepper motor. The range of 45 ° is spread over 800 microsteps. Operation using a motor controller enables adjustment and use with a computer. With DN 50 flanges for beam entrance and outlet and sideways DN 16 for the connection of purging gas or vacuum line.

Product	Energy Density	Power Density	Substrate	Transmission
VAV157	0,20 J/cm²	100 kW/cm²	CaF2	2 - 70 %
VAV193	0,80 J/cm²	100 kW/cm²	FS	5 - 80 %
VAV248	2,00 J/cm²	100 kW/cm²	FS	2 - 90 %
VAV266	2,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAV308	5,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAV351	8,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAV355	5,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAV514	10,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAV532	10,00 J/cm²	100 kW/cm²	FS	1 - 92 %
VAV808	15,00 J/cm²	100 kW/cm²	FS	1 - 95 %
VAV1064	20,00 J/cm²	100 kW/cm²	FS	1 - 98 %

Technical drawings, dimensions and weight

Variable laser beam attenuator for vacuum applications drawing

DN 50 and DN 16
Width: 190 mm
Height: 135 mm
Length: 260 mm
Weight: 5000 g