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.
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. | Magnification | Input CA (mm) | Output CA (mm) | M1 | Dia 1 (mm) | Dia 2 (mm) | L1 (mm) | L2 (mm) |
|---|---|---|---|---|---|---|---|---|
| BEX-1064-1X | 1 | 15.5 | 23 | M22x0.75 | 31 | 29 | 45.6 | 65.6 |
| BEX-1064-1.2X | 1.2 | 16 | 23 | M22x0.75 | 29 | 29 | 50.46 | 54.93 |
| BEX-1064-1.5X | 1.5 | 15 | 22 | M22x0.75 | 32 | 32 | 46.9 | 51.9 |
| BEX-1064-1.5X1 | 1.5 | 15.5 | 23 | M22x0.75 | 25 | 29 | 35.46 | 44.46 |
| BET2X/1064 | 2 | 3 | 4 | M24x0.5 | 26 | M24x0.5 | 28 | 41 |
| BEX-1064-2X | 2 | 10 | 20 | M22x0.75 | 26 | 26 | 28 | 42 |
| BEX-1064-2X1 | 2 | 15 | 23 | M22x0.75 | 29 | 31.5 | 31 | 45 |
| BEX-1064-2.5X | 2.5 | 10 | 23 | M22x0.75 | 29 | 29 | 53 | 67 |
| BEX-1064-2.5X1 | 2.5 | 10 | 23 | M22x0.75 | 29 | 29 | 58.55 | 79.75 |
| BET3X/1064 | 3 | 10 | 17 | M24x0.5 | 26 | 26 | 45 | 58 |
| BEX-1064-3X | 3 | 10 | 20 | M22x0.75 | - | 26 | 44.7 | 60 |
| BEX-1064-3X1 | 3 | 10 | 33 | M30x1 | 40 | 40 | 43 | 57 |
| BEX-1064-3X3 | 3 | 10 | 23 | M22x0.75 | 29 | 29 | 42 | 58 |
| BEX-1064-4X | 4 | 10 | 22 | M22x0.75 | 29 | 29 | 64 | 81 |
| BET5X/1064 | 5 | 10 | 23 | M33x0.5 | M33x0.5 | M33x0.5 | 57 | 73.1 |
| BEX-1064-5X | 5 | 10 | 23 | M22x0.75 | 29 | 29 | 55 | 72 |
| BEX-1064-5X1 | 5 | 10 | 16 | M16x0.75 | 20 | 20 | 42 | 56 |
| BEX-1064-6A | 6 | 6 | 13 | M16x0.75 | 20 | 20 | 56.81 | 71.81 |
| BEX-1064-6X | 6 | 10 | 22 | M22x0.75 | 29 | 29 | 54 | 70 |
| BEX-1064-6X1 | 6 | 10.5 | 26 | M22x0.75 | 32 | 32 | 79 | 89.39 |
| BEX-1064-6X2 | 6 | 6 | 16 | - | 25 | 25 | - | 69.64 |
| BEX-1064-7X | 7 | 6 | 23 | M22x0.75 | 29 | 29 | 60.43 | 76.43 |
| BEX-1064-8X | 8 | 10 | 22 | M22x0.75 | 29 | 29 | 58 | 76 |
| BEX-1064-10X | 10 | 8 | 22 | M22x0.75 | 29 | 29 | 52 | 70 |
| BEX-1064-10X1 | 10 | 11 | 34 | - | 40 | 40 | 79 | 94.54 |
| BEX-1064-10XI | 10 | 8 | 22 | M22x0.75 | 29 | 29 | 56 | 70 |
| BEX-1064-12A | 12 | 6 | 13 | M16x0.75 | 20 | 20 | 64.81 | 79.81 |
| BEX-1064-15X | 15 | 7.5 | 28 | M30x1 | 36 | 45 | - | 99.12 |
| BEX-1064-20X | 20 | 8 | 28 | M22x0.75 | 45 | 45 | 76.27 | 91.27 |
| BEX-1064-30X | 30 | 6 | 38 | M22x0.75 | 30 | 46 | 103.6 | 118.6 |
| BEX-1064-40X | 40 | 1.25 | 50 | - | 60 | 60 | - | 207.24 |
| BEX-1064-5Z | 5 | 10 | 32 | M30x1 | 37.6 | M43x0.5 | 77.6 | 84.6 |
| BEX-1064-5Z1 | 5 | 10 | 32 | M30x1 | 37.6 | M43x0.5 | 77.6 | 84.6 |
| BEX-1064-6Z1 | 6 | 10 | 26 | M30x1 | 36 | M43x0.5 | 57 | 72 |
| BEX-1064-8Z | 8 | 10 | 34 | M30x1 | 36 | M43x0.5 | 68 | 83 |
| BEX-1064-10Z | 10 | 11 | 34 | M30x1 | 43 | M43x0.5 | 80 | 95.9 |
1064nm Beam Expander (Custom)
| Part No. | Magnification | Input CA (mm) | Output CA (mm) | Dia 1 (mm) | L1 (mm) | Dia 2 (mm) | L2 (mm) |
|---|---|---|---|---|---|---|---|
| BEX-1064-30X-100OP | 30 | 10 | 100 | M30X1 | 195 | 120 | - |
| BEX-1064-40X-120OP | 40 | 8 | 128 | M30X1 | 140.53 | 153 | 188.77 |
1064-532nm Beam Expander
| Part No. | Magnification | Input CA (mm) | Output CA (mm) | Dia 1 (mm) | L1 (mm) | Dia 2 (mm) | L2 (mm) |
|---|---|---|---|---|---|---|---|
| BEX-1064--532-5X | 5 | 6 | 18 | M22X0.75 | 29 | 56 |
Green (532nm) Beam Expander Adjustable Series
Beam Expander Adjustable Series Features
| Part No. | Magnification | Input CA (mm) | Output CA (mm) | M1 | Dia 1 (mm) | Dia 2 (mm) | L1 (mm) | L2 (mm) |
|---|---|---|---|---|---|---|---|---|
| BEX-532-2X | 2 | 6 | 23 | M22x0.75 | 30 | 30 | 83 | 67 |
| BEX-532-2XA | 2 | 13 | 23 | M22x0.75 | 30 | 30 | 82.68 | 67.68 |
| BEX-532-3X | 3 | 6 | 23 | M22x0.75 | 30 | 30 | 83 | 67 |
| BEX-532-4X | 4 | 6 | 23 | M22x0.75 | 30 | 30 | 83 | 67 |
| BEX-532-5X | 5 | 8 | 24 | M23x0.75 | 30 | 30 | 83.2 | 65.7 |
| BEX-532-6X | 6 | 6 | 23.6 | M22x0.75 | 30 | 30 | 83 | 67 |
| BEX-532-10X | 10 | 6 | 23 | M22x0.75 | 30 | 30 | 83 | 67 |
| BEX-532-12X | 12 | 7 | 24 | M22x0.75 | 30 | 30 | 83 | 67 |
| BEX-532-15X | 15 | 6 | 32 | M30x1 | 40 | M43x0.5 | 85 | 67 |
| BEX-532-18X | 18 | 5 | 40 | 20.5mm | 20.5 | 47 | 176.5 | 163 |
| BEX-532-20X | 20 | 6 | 38 | M30x1 | 40 | 40 | 95.2 | 66.73 |
| BEX-532-20X-Q | 20 | 8 | 32 | M22x0.75 | - | 45 | 92.26 | 75.26 |
| BEX-532-30X | 30 | 5 | 38 | M22x0.75 | 30 | 46 | 108.72 | 123.72 |
405 nm BEX – Adjusted Series
| Part No. | Magnification | Input CA (mm) | Output CA (mm) | Dia 1 (mm) | Dia 2 (mm) | L1 (mm) | L2 (mm) |
|---|---|---|---|---|---|---|---|
| BEX-405-1.5X | 1.5 | 60 | 30 | - | 46 | 85 | - |
| BEX-405-2X | 2 | 6 | 30 | - | 46 | 85 | - |
| BEX-405-3X | 3 | 6 | 30 | - | 46 | 85 | - |
| BEX-405-5X | 5 | 6 | 30 | - | 46 | 85 | - |
| BEX-405-7X | 7 | 4.2 | 30 | - | 46 | 85 | - |
| BEX-405-10X | 10 | 3 | 30 | - | 46 | 89 | - |
| BEX-405-20X | 20 | 1.5 | 30 | - | 46 | 95 | - |
UV (355 nm) Beam Expander – Adjustable Series
Beam Expander Adjustable Series Features
| Part No. | Magnification | Input CA (mm) | Output CA (mm) | M1 | M2 | L1 (mm) | L2 (mm) |
|---|---|---|---|---|---|---|---|
| BEX-355-1.5X | 1.5 | 7.0 | 24.0 | M30x1 | M43x0.5 | 48.1 | 76.5 |
| BEX-355-2X | 2 | 7.0 | 24.0 | M30x1 | M43x0.5 | 47.24 | 75.64 |
| BEX-355-3X | 3 | 7.0 | 24.0 | M30x1 | M43x0.5 | 48.93 | 77.33 |
| BEX-355-4X | 4 | 8.0 | 28.0 | M30x1 | M43x0.5 | 48.93 | 77.33 |
| BEX-355-5X | 5 | 8.0 | 28.0 | M30x1 | M43x0.5 | - | 71 |
| BEX-355-7X | 7 | 8.0 | 28.0 | M30x1 | M43x0.5 | 73.13 | 88.13 |
| BEX-355-8X | 8 | 8.0 | 28.0 | M30x1 | M43x0.5 | 70.0 | 84.0 |
| BEX-355-10X | 10 | 6.0 | 28.0 | M30x1 | M43x0.5 | 80.5 | 96.0 |
| BEX-355-15X | 15 | 6.0 | 28.0 | M30x1 | M43x0.5 | - | 95.0 |
| BEX-355-20X | 20 | 6.0 | 28.0 | M30x1 | M43x0.5 | 81.3 | 97.0 |
266nm BEX – Fixed Series
| Part No. | Magnification | Input CA (mm) | Output CA (mm) | Dia 1 (mm) | Dia 2 (mm) | L1 (mm) | L2 (mm) |
|---|---|---|---|---|---|---|---|
| BEX-266-1.5X | 1.5 | 8.0 | 24.0 | 30.0 | 30.0 | 46.2 | 63.7 |
| BEX-266-2X | 2 | 8.0 | 24.0 | 30.0 | 30.0 | 55.0 | 73.0 |
| BEX-266-3X | 3 | 10.0 | 23.0 | 30.0 | 30.0 | 38.2 | 68.7 |
| BEX-266-5X | 5 | 10.0 | 23.0 | 30.0 | 30.0 | 58.6 | 69.6 |
| BEX-266-10X | 10 | 6.0 | 23.0 | 27.0 | 30.0 | 82.6 | 95.6 |
| BEX-266-20X | 20 | 1.5 | 30.0 | 37.6 | 46.0 | 75.0 | 89.5 |
ZnSe Beam Expanders
ZnSe optics work with a flat transmittance from 2 to 14+ microns. They are great for CO2 laser applications.
