Laboratory optical integration
Beam Expander: The component is selected by matching its interfaces and error contribution to the complete instrument budget.

Laser components & accessories
A beam expander is any optical system designed to increase the diameter of a laser beam. In most cases, the term is taken to mean a telescope designed to take a small-diameter collimated beam input beam and produce a larger diameter collimated output beam, thus reducing the divergence of the beam. The beam expander consists of a negative input lens and a positive objective. The expansion factor is the ratio of the focal length of the two lenses. The variable rate laser beam expander is mainly composed of multiple sets of ultraviolet fused silica (UVFS) lenses, which are integrated in a mechani
| Features | Applications |
|---|---|
| Low power loss Good output collimation Able to withstand laser power of more than 1000 W Adjustable divergence angle of 18 to 32 mrad with the variable beam expanders | Precision laser machining: capable to provide a high power density focal spot. Laser range finder: capable to provide a highly collimated beam. Combining with a spatial filter, able to modify laser power distribution. |
| Specifications Part No. | Expansion ratio | Dimensions (mm) | |
|---|---|---|---|
| For model III & F | For model FN | ||
| BE-2x | 2X | Ø25*50.5 | |
| BE-3x | 3X | Ø42*84.8 | Ø42*87.8 |
| BE-4x | 4x | ||
| BE-5x | 5X | ||
| BE-8x | 8x | Ø56*147.8 | Ø56*150.8 |
| BE-10x | 10X | ||
| BE-15x | 15x | Ø56*192.8 | Ø56*195.8 |
| BES-01 | BES-02 |
|---|---|
| Dimensions: 75 (L) Ø50 (W) Ø101 (H) mm 3 | Dimensions: 75 (L) Ø50 (W) Ø119 (H) mm 3 |
| Part No. | Expansion ratio | Dimensions (mm) |
|---|---|---|
| BEW-2x | 2X | Ø29*51 |
| BEW-3x | 3X | Ø42*87.8 |
| BEW-5x | 5X | Ø45*123.8 |
| BEW-10x | 10X | Ø84*209 |
| Working wavelength | 355nm/532nm/1064 nm | Rate of adjustment | 2X-10X |
|---|---|---|---|
| element material | Uv fused quartz | Transmittance | Ø96% |
| Surface finish | 40/20 | Incident light aperture | 9.3 mm |
| Weight | Ø0.25 kg | Outgoing light aperture | 33.0 mm |
| Locking method | M3 rubber head screw | Diffraction limit: The maximum diameter of the incident beam | 2.2-6.0 mm @355nm Ø 3.0-8.0 mm @532nm Ø 3.0-8.0 mm @1064nm |
| Length of mechanical parts (2X) | 155.1 mm @355nm Ø 156.2 mm @532nm Ø 158.6 mm @1064nm | Mechanical part length (10X) | 150.5 mm @355nm Ø 150.1 mm @532nm Ø 153.5 mm @1064nm |
| Membrane layer damage threshold | 2.5 J/cm²;1.0MW/cm² @355nm Ø 5.0 J/cm²;2.5MW/cm² @532nm Ø 10 J/cm²;5MW/cm² @1064nm | System damage threshold | 0.25 J/cm²;0.1MW/cm² @355nm Ø 0.5 J/cm²;0.25MW/cm² @532nm Ø 1.0 J/cm²;0.5MW/cm² @1064nm |
Application context
Application fit depends on the ordered configuration; catalog values are separated from fields that still require confirmation.
Beam Expander: The component is selected by matching its interfaces and error contribution to the complete instrument budget.
Beam Expander: A documented configuration prevents optical, mechanical and control assumptions from becoming integration failures.
Engineering reference
Beam Expander is a configurable configurable scientific component in the Laser components and accessories family. The final part number should be released only after the optical, mechanical, electrical and environmental fields below are matched to the intended instrument.
This component must be qualified inside the complete optical, mechanical and electrical chain. Interfaces, performance limits and environmental conditions are coupled; a model name alone is not sufficient to release an instrument design.
Selection guidance describes the engineering fields that must be checked. It does not assign an option-dependent value that is absent from the catalog record.
Technical FAQ
Confirm primary function, operating range, performance budget, physical interface, control interface, and environment. These fields are coupled, so the final part number should be checked against the complete instrument rather than selected from the model name alone.
This component must be qualified inside the complete optical, mechanical and electrical chain. Interfaces, performance limits and environmental conditions are coupled; a model name alone is not sufficient to release an instrument design. Freeze the optical, mechanical and electrical interfaces before releasing the surrounding assembly.
Approve the configuration-specific specification, mechanical drawing, connector or pinout definition, environmental suffix and acceptance-test limits supplied with the quotation. Any field absent from the local record remains a confirmation item, not an assumed capability.