We supply two types of variable attenuators for different applications. The circular variable attenuator can make the optical density linearly varies around a 0°-270° circle for measuring laser energe farthest. As for the square one, the optical density linearly varies across the length for measuring laser energe.

Circular variable attenuator

Applications: 

Detector of photon

Electronic image

Optical instrumentation

Specifications

Material

BK7grade A optical glass, Fused silica

Optical Density Range

OD0-OD3

Outside Diameter Φ54mm±0.25
Dimension 5.4*4.2*6.7mm
Linearity of Density ±5%@632.8nm

Coating

S1:Ni-Cr-Fe; S2:Boardband AR coating; incidence angle:0°-15°

Clear aperture

>80% diameter

Damage threshold

30W/cm2 CW

Note: Dimension, wavelength range ,OD or other request are available upon request.


Square variable attenuator

 

Applications: 

Electronic image

Detector of photon

Optical instrumentation

Specifications

Material

BK7grade A optical glass, Fused silica

Optical Density Range

OD0-OD2

linearity Density

OD±5%

Dimension 76.2*25.4*2.0mm

Coating

S1:Ni-Cr-Fe; S2:Boardband AR coating; incidence angle:0°-15°

Clear aperture

>80% diameter

Damage threshold

30 W/cm2 CW

Note: Dimension, wavelength range ,OD or other request are available upon request.