High Power Laser Beam Expander (3x - 10x) / BEHP
These laser beam expanders are designed for use with a high-power laser.
It supports a broader wavelength range than the current models.
It can be used in an optical system with high precision, such as a laser interferometer and processing by the lens design that takes into account the wavefront aberration.
The optical system of the beam expander utilizes an air gap configuration that does not use an adhesive bonding of lens.By turning the diopter ring that is attached to the center of the beam expander, you can make variable beams such as a focused beam, collimated beam, and a divergent beam. It is used when you want to vary the position of the beam waist and where precision collimation adjustment is necessary
Common Specifications
| Lens Material | Synthetic fused silica |  |
|---|---|---|
| Configuration of Lens | 2 group 4plates Galilean | |
| Acceptance Range of Incident Angle | ±1° | |
| Coating | Antireflection coating (Design wavelength: 633nm) | |
| A Range of the Length of Lens Barrel | ±5mm | |
| Frame Material | Aluminum | |
| Finish | Black Anodized |
| Outline Drawing |
|---|
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| Part Number | Design Wavelength | Beam Magnification | Input Clear Aperture | Laser Damage Threshold* |
|---|---|---|---|---|
| BEHP-3-266 | 266nm | 3x | φ10mm | 2J/cm2 |
| BEHP-5-266 | 266nm | 5x | φ6mm | 2J/cm2 |
| BEHP-10-266 | 266nm | 10x | φ3mm | 2J/cm2 |
| BEHP-3-355 | 355nm | 3x | φ10mm | 4J/cm2 |
| BEHP-5-355 | 355nm | 5x | φ6mm | 4J/cm2 |
| BEHP-10-355 | 355nm | 10x | φ3mm | 4J/cm2 |
| BEHP-3-532 | 532nm | 3x | φ10mm | 5J/cm2 |
| BEHP-5-532 | 532nm | 5x | φ6mm | 5J/cm2 |
| BEHP-10-532 | 532nm | 10x | φ3mm | 5J/cm2 |
| BEHP-3-1064 | 1064nm | 3x | φ10mm | 7J/cm2 |
| BEHP-5-1064 | 1064nm | 5x | φ6mm | 7J/cm2 |
| BEHP-10-1064 | 1064nm | 10x | φ3mm | 7J/cm2 |
*Laser pulse width 10ns, repetition frequency 20Hz
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