High-Power Zoom type Laser Beam Expander (Variable magnification) / BEZHP
ハIt is high-power zoom Laser beam expander.
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 design of the beam expander is an air gap configuration that does not use an adhesive to bond the lenses. This allows the beam expander to be used with a high-power laser.It is designed and coated to enable to use in a broader wavelength range than the current models.
By turning the diopter ring that is attached to the center of the beam expander, you can make variable beams such as the focused beam, collimated beam, and the divergent beam. It is used when you want to vary the position of the beam waist and if strict collimation adjustment is necessary
Common Specifications
| Lens Material | Synthetic fused silica |  |
|---|---|---|
| Frame Material | Aluminum | |
| Finish | Black anodized | |
| Incident Angle | 0° | |
| Pointing | ＜0.5mrad (Reference value) |
| Outline Drawing (BEZHP-1/3) | Outline Drawing (BEZHP-2/8) |
|---|---|
 |
 |
| Specifications (Magnification) | ||||||
|---|---|---|---|---|---|---|
| Part Number | Beam Magnification | Output Aperture Diameter | Input Clear Aperture | Transmitted wavefront distortion (P-V)*3 |
Weight | |
| BEZHP-1/3 | 1 － 3x | φ25mm | φ6mm(1x － 3x) Maxφ14mm(1x) |
＜λ/7 (design value for input dia. of 5mm.) Reference ＜λ/4 (input beam dia. 4mm, magnification 3x, 632.8nm) |
0.21kg | |
| BEZHP-2/8-250/280 | 2 － 8x | φ27mm | φ3mm(2x － 8x) Maxφ10mm(×2) |
＜λ/7 (design value for input dia. of 3mm or 2mm for 8x magnification.) Reference ＜λ/4 (input beam dia. 4mm, magnification 3x, 632.8nm) |
0.47kg | |
| BEZHP-2/8-340/380 | 2 － 8x | φ27mm | φ3mm(2x － 8x) Maxφ10mm(×2) |
＜λ/7 (design value for input dia. of 3mm or 2mm for 8x magnification. Reference ＜λ/4 (input beam dia. 4mm, magnification 3x, 632.8nm) |
0.47kg | |
| BEZHP-2/8-500/570 | 2 － 8x | φ27mm | φ3mm(2x － 8x) Maxφ10mm(×2) |
＜λ/7 (design value for input dia. of 4mm or 2mm for 7x magnification. Reference ＜λ/4 (input beam dia. 4mm, magnification 3x, 632.8nm) |
0.47kg | |
| BEZHP-2/8-1030/1100 | 2 － 8x | φ27mm | φ3mm(2x － 8x) Maxφ10mm(×2) |
＜λ/7 (design value for input dia. of 4mm or 3mm for 7x magnification.) Reference ＜λ/4 (input beam dia. 4mm, magnification 3x, 632.8nm) |
0.47kg | |
*3 Transmitted wavefront distortion is design value and not guaranteed. Transmitted wavefront distortion is not measured at the design wavelength.
| Specifications (Wavelength Range) | ||||||
|---|---|---|---|---|---|---|
| Part Number | Design Wavelength | AR Coating Wavelengths | Transmittance (AR Coat Calculated Value)*2 | Laser Damage Threshold*1 | ||
| BEZHP-1/3-250/280 | 250 － 266nm | 250 － 280nm | >98％ (266nm)、>94％ (257.5nm) >94％ (250 － 280nm)、>43％ (600 － 700nm) |
2J/cm2 | ||
| BEZHP-1/3-340/380 | 340 － 355nm | 340 － 380nm | >98％ (355nm)、>94％ (343.3nm) >94％ (340 － 380nm)、>43％ (600 － 700nm) |
4J/cm2 | ||
| BEZHP-1/3-500/570 | 500 － 532nm | 500 － 570nm | >98％ (532nm)、>96％ (515nm) >96％ (500 － 570nm)、>43% (600 － 700nm) |
5J/cm2 | ||
| BEZHP-1/3-1030/1100 | 1030 － 1064nm | 1030 － 1100nm | >98％ (1064nm)、>96％ (1030nm) >96％ (1030 － 1100nm)、>43% (600 － 700nm) |
7J/cm2 | ||
| BEZHP-2/8-250/280 | 250 － 266nm | 250 － 280nm | >98％ (266nm)、>94％ (257.5nm) >94％ (250 － 280nm)、>43% (600 － 700nm) |
4J/cm2 | ||
| BEZHP-2/8-340/380 | 340 － 355nm | 340 － 380nm | >98％ (355nm)、>94％ (343.3nm) >94％ (340 － 380nm)、>43% (600 － 700nm) |
4J/cm2 | ||
| BEZHP-2/8-500/570 | 500 － 532nm | 500 － 570nm | >98％ (532nm)、>96％ (515nm) >96％ (500 － 570nm)、>43% (600 － 700nm) |
7J/cm2 | ||
| BEZHP-2/8-1030/1100 | 1030 － 1064nm | 1030 － 1100nm | >98％ (1064nm)、>96％ (1030nm) >96％ (1030 － 1100nm)、>43% (600 － 700nm) |
7J/cm2 | ||
*1 Laser pulse width; 10ns , Repetition frequency; 20Hz
*2 The transmittance of the beam expander differs depending on the wavelength and/or input beam diameter.
Shop By
Shopping Options
