Beam Expanders

Beam Expanders for CO2 Laser Systems: Transmissive & Reflective

A beam expander is a two or more element optical system that changes the beam’s size and divergence characteristics. Beam expanders have numerous uses. By expanding a beam prior to focusing, smaller focal spot sizes can be achieved. Beam expanders improve a beam’s collimation. They are also used to reduce the beam diameter which may be useful when using acousto- or electro-optic modulators. Using a spatial filter with a beam expander can make an asymmetrical beam profile more symmetric and provide more uniform energy distribution.

Features:

  • Low insertion loss
  • High-power operation
  • Visible transmission
  • Adjustable focus (on some models)
  • Customizing available
  • Minimum beam deviation

Housing Dimensions

Part #

Input CA
(mm)

Output CA
(mm)

Expansion

Diameter
(mm)

Length
(mm)

BECZ-10.6-C0.57:4.5-D1.55-FX

9

14

1.55

36

47

BECZ-10.6-C0.57:4.5-D1.55-MI

9

14

1.55

36

47

BECZ-10.6-C0.57:3.1-D2.1-FX

9

14

2.1

36

47

BECZ-10.6-C0.65:2.53-D4-MI

11.43

17.15

4

38.1

54.75

BECZ-10.6-C0.675:3.79-D2-A1-MI

11.43

17.15

2

38.1

54.86

BECZ-10.6-C0.7:10.0-D1.25-MI

11.43

17.78

1.25

30.48

57.3

BECZ-10.6-C0.7:2.85-D3-MI

11.43

17.78

3

30.48

54.76

BECZ-10.6-C0.7:2.5-D4-MI

11.43

17.78

4

30.48

54.66

BECZ-10.6-C0.7:2.72-D5-MI

11.43

17.78

5

30.48

61.94

BECZ-10.6-C0.9:5.6-D1.5-MI

17.15

22.86

1.5

30.48

53.69

BECZ-10.6-C0.9:3.37-D2.5-MI-A

11.43

22.86

2.5

36

61.37

BECZ-10.6-C0.9:3.37-D2.5-B

11.43

22.86

2.5

36

69.07

BECZ-10.6-C0.9:3.37-D2.5-C

17.15

22.86

2.5

36

68.56

BECZ-10.6-C0.9:2.43-D5-MI

11.43

22.86

5

30.5

56.5

BECZ-10.6-C0.9:2.5-D7.5-MI

11.43

22.86

7.5

30.48

61.94