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The most common beam expander is Galilean type which usually has one negative input lens and one positive output lens. The beam expansion ratio for a Gaussian beam depends not only on the specifications of the beam expander, but also on the laser beam parameters as well as the positions of the optical lenses.

Beam Expanders –  1064/532/355/405/266nm

Mounting Version for Beam Expander
The new beam expander mounting is an adjustable mount that has been a widely accepted model that can compensate various degrees of input beam. Now with the new mount, the operation of adjusting the first lens is more convenient. The user only needs to turn the center part of the beam expander and the first lens will move accordingly along the optical axis with no rotation.

Beam Expander Mounting Diagram
YAGBeamExpander

Advantages
This mount also has advantage as the first lens does not rotate in respect to the second lens. It also has been equipped with scale for the user to measure the distance of the lenses.

Beam Expander Adjustable Series Features

1064nm Beam Expander

Part No.MagnificationInput CA
(mm)
Output CA
(mm)
M1Dia 1
(mm)
Dia 2
(mm)
L1
(mm)
L2
(mm)
BEX-1064-1X115.523M22x0.75312945.665.6
BEX-1064-1.2X1.21623M22x0.75292950.4654.93
BEX-1064-1.5X1.51522M22x0.75323246.951.9
BEX-1064-1.5X11.515.523M22x0.75252935.4644.46
BET2X/1064234M24x0.526M24x0.52841
BEX-1064-2X21020M22x0.7526262842
BEX-1064-2X121523M22x0.752931.53145
BEX-1064-2.5X2.51023M22x0.7529295367
BEX-1064-2.5X12.51023M22x0.75292958.5579.75
BET3X/106431017M24x0.526264558
BEX-1064-3X31020M22x0.75-2644.760
BEX-1064-3X131033M30x140404357
BEX-1064-3X331023M22x0.7529294258
BEX-1064-4X41022M22x0.7529296481
BET5X/106451023M33x0.5M33x0.5M33x0.55773.1
BEX-1064-5X51023M22x0.7529295572
BEX-1064-5X151016M16x0.7520204256
BEX-1064-6A6613M16x0.75202056.8171.81
BEX-1064-6X61022M22x0.7529295470
BEX-1064-6X1610.526M22x0.7532327989.39
BEX-1064-6X26616-2525-69.64
BEX-1064-7X7623M22x0.75292960.4376.43
BEX-1064-8X81022M22x0.7529295876
BEX-1064-10X10822M22x0.7529295270
BEX-1064-10X1101134-40407994.54
BEX-1064-10XI10822M22x0.7529295670
BEX-1064-12A 12613M16x0.75202064.8179.81
BEX-1064-15X157.528M30x13645-99.12
BEX-1064-20X20828M22x0.75454576.2791.27
BEX-1064-30X30638M22x0.753046103.6118.6
BEX-1064-40X401.2550-6060-207.24
BEX-1064-5Z51032M30x137.6M43x0.577.684.6
BEX-1064-5Z151032M30x137.6M43x0.577.684.6
BEX-1064-6Z161026M30x136M43x0.55772
BEX-1064-8Z81034M30x136M43x0.56883
BEX-1064-10Z101134M30x143M43x0.58095.9

1064nm Beam Expander (Custom)

Part No.MagnificationInput CA
(mm)
Output CA
(mm)
Dia 1
(mm)
L1
(mm)
Dia 2
(mm)
L2
(mm)
BEX-1064-30X-100OP3010100M30X1 195120-
BEX-1064-40X-120OP408128M30X1140.53153188.77

1064-532nm Beam Expander

Part No.MagnificationInput CA
(mm)
Output CA
(mm)
Dia 1
(mm)
L1
(mm)
Dia 2
(mm)
L2
(mm)
BEX-1064--532-5X5618M22X0.752956

Green (532nm) Beam Expander Adjustable Series

Beam Expander Adjustable Series Features

Part No.MagnificationInput CA
(mm)
Output CA
(mm)
M1Dia 1
(mm)
Dia 2
(mm)
L1
(mm)
L2
(mm)
BEX-532-2X2623M22x0.7530308367
BEX-532-2XA21323M22x0.75303082.6867.68
BEX-532-3X3623M22x0.7530308367
BEX-532-4X4623M22x0.7530308367
BEX-532-5X5824M23x0.75303083.265.7
BEX-532-6X6623.6M22x0.7530308367
BEX-532-10X10623M22x0.7530308367
BEX-532-12X12724M22x0.7530308367
BEX-532-15X15632M30x140M43x0.58567
BEX-532-18X1854020.5mm20.547176.5163
BEX-532-20X20638M30x1404095.266.73
BEX-532-20X-Q20832M22x0.75-4592.2675.26
BEX-532-30X30538M22x0.753046108.72123.72

405 nm BEX – Adjusted Series

Part No.MagnificationInput CA
(mm)
Output CA
(mm)
Dia 1
(mm)
Dia 2
(mm)
L1
(mm)
L2
(mm)
BEX-405-1.5X1.56030-4685-
BEX-405-2X2630-4685-
BEX-405-3X3630-4685-
BEX-405-5X5630-4685-
BEX-405-7X74.230-4685-
BEX-405-10X10330-4689-
BEX-405-20X201.530-4695-

UV (355 nm) Beam Expander – Adjustable Series

Beam Expander Adjustable Series Features

Part No.MagnificationInput CA
(mm)
Output CA
(mm)
M1M2L1
(mm)
L2
(mm)
BEX-355-1.5X1.57.024.0M30x1M43x0.548.176.5
BEX-355-2X27.024.0M30x1M43x0.547.2475.64
BEX-355-3X37.024.0M30x1M43x0.548.9377.33
BEX-355-4X48.028.0M30x1M43x0.548.9377.33
BEX-355-5X58.028.0M30x1M43x0.5-71
BEX-355-7X78.028.0M30x1M43x0.573.1388.13
BEX-355-8X88.028.0M30x1M43x0.570.084.0
BEX-355-10X106.028.0M30x1M43x0.580.596.0
BEX-355-15X156.028.0M30x1M43x0.5-95.0
BEX-355-20X206.028.0M30x1M43x0.581.397.0

266nm BEX – Fixed Series

Part No.MagnificationInput CA
(mm)
Output CA
(mm)
Dia 1
(mm)
Dia 2
(mm)
L1
(mm)
L2
(mm)
BEX-266-1.5X1.58.024.030.030.046.263.7
BEX-266-2X28.024.030.030.055.073.0
BEX-266-3X310.023.030.030.038.268.7
BEX-266-5X510.023.030.030.058.669.6
BEX-266-10X106.023.027.030.082.695.6
BEX-266-20X201.530.037.646.075.089.5
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