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  • Part number: GCO-140102 Beam Expanders
  • Release date: 2017-06-09
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GCO-14 Beam Expanders
 
A beam expander is an optical system for changing the beams diameter. The product of the diameter and divergence for a laser beam remains constant between input and output. This means that, if the beam diameter increases, the divergence of the output will decrease. Beam expanders use this inverse-proportional relationship between the diameter and divergence to expand a laser beam, or to reduce the beam divergence. Low divergence allows for a smaller focus spot of a Gaussian beam.
In summary, beam expanders are used for fine focusing, reducing beam divergence and minimizing diffraction effect. Daheng Beam Expanders (GCO-14) are professionally designed for complicated systems and ideally used in combination with Daheng F-Theta lenses (GCO-31).

 

Part No.

Expansion Ratio

Wavelength

Max. Input Beam Diameter(1/e²)

Input Aperture

Outer

Diameter

Length

Transmitted

Wavefront

Transmission

Damage

Threshold

GCO-140101

3X

355nm

6

8

40

75

<λ/4(RMS)

>98.5%

 

GCO-140102

5X

355nm

4

5.5

40

95

<λ/4(RMS)

>98.5%

GCO-140103

8X

355nm

3

5

40

115

<λ/4(RMS)

>98.5%

 

 

 

 

 

 

 

 

 

10J/cm2 @10ns 10Hz

GCO-140111

3X

532nm

8

10.5

40

75

<λ/4(RMS)

>98.5%

GCO-140112

5X

532nm

6

8

48

95

<λ/4(RMS)

>98.5%

 

 

 

 

 

 

 

 

 

GCO-140113

8X

532nm

4

8

48

105

<λ/4(RMS)

>98.5%

1064nm

GCO-140121

3X

1064nm

8

10.5

40

75

<λ/4(RMS)

>98.5%

GCO-140122

5X

1064nm

6

8

48

95

<λ/4(RMS)

>98.5%

GCO-140123

8X

1064nm

4

5.5

48

105

<λ/4(RMS)

>98.5%

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