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Variable combined attenuator Wheel

Reference: DAT-Attenuator-EAM

Variable attenuator for beam profiler in the ray analysis with 99 different attenuation values in the range of 1010-0 (0 to 100 dB).

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Variable combined attenuator Wheel
Variable attenuator for beam profiler in the ray analysis with 99 different attenuation values in the range of 1010-0 (0 to 100 dB).
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Alexandre Besson
Business Unit Director
+33 5 57 10 92 84
a.besson@laser2000.fr

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Product description

Variable combined attenuator Wheel

Description

Most electronic cameras are too sensitive for direct illumination by a laser beam. A typical value for saturation is 10 µW/cm2. The addition of an optical attenuator is therefore essential for most of all beam analysis measurements.

The most commonly used attenuator module is the EAM-2. This module has 4 different filter wheels with 3 filters and one hole on each wheel. The EAM allows a discrete choice of 99 different attenuation values, covering an attenuation range from 10^10 to 0 (0 to 100 dB).

Filters are manufactured carefully according to detailed specifications with respect to transmission and material quality. They are mounted under a certain angle avoiding multiple and back reflections from the surface.

Parameter:	Specification
Wavelength range:	350 - 2200 nm
Number of Filterwheels:	4 with 3 filters each
Max. Pos.deviation:	0.09 mm
Mounting angle of filters:	4°
Attenuation:	0 - 100 dB @ 99 positions (256 total)
Max. power density:	1 W/cm2
Max. energy density:	100 mJ/cm2
Free aperture:	ø 18 mm
Max. filter thickness:	3 mm
Camera connection:	C-Mount
Mounting thread:	M6 Gewinde