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Technical specifications
Compare the listed configurations and match the specifications to your setup.
Jump to a specification table (4)
34 specification rows.
VA-C · circular variable attenuator
11 entries| Parameter | Specification |
|---|---|
| Model | VA-C |
| Material | BK7grade A optical glass, Fused silica |
| Optical Density Range | OD0-OD3 |
| Outside Diameter | Φ54mm±0.25 |
| Dimension | 54*42*67mm |
| Linearity of Density | ±5%@632.8nm |
| Coating | S1:Ni-Cr-Fe; S2:Boardband AR coating; incidence angle:0°-15° |
| Clear aperture | >80% diameter |
| Damage threshold | 30W/cm² CW |
| Active wavelength | 400-1100 nm |
| Applicable power | <1000 mW |
VA-S · rectangular variable attenuator
9 entries| Parameter | Specification |
|---|---|
| Model | VA-S |
| Material | BK7grade A optical glass, Fused silica |
| Optical Density Range | OD0-OD2 |
| Dimension | 76.2*25.4*2.0mm |
| Linearity of Density | OD±5% |
| Coating | S1:Ni-Cr-Fe; S2:Boardband AR coating; incidence angle:0°-15° |
| Clear aperture | >80% diameter |
| Damage threshold | 30W/cm² CW |
| Active wavelength | 400-1100 nm |
VA-P · polarization attenuator
3 entries| Parameter | Specification |
|---|---|
| Model | VA-P |
| Dimensions | Φ33 mm ×65 (L) mm |
| Wavelength | 400-1100 nm (Other wavelengths can be customized) |
ATT-45 & ATT-20 · motorized attenuators
11 entriesScroll horizontally to compare all columns
| Model | ATT-45 | ATT-20 |
|---|---|---|
| Attenuation wavelength | 1.064μm | 1.064μm |
| Limiting aperture | ≤5mm | ≤5mm |
| Polarization state | Suitable for P polarization | Suitable for P polarization |
| Dynamic adjustment range | 0~45dB (customizable) | 0~20dB (customizable) |
| Step width | ≤1dB | ≤1dB |
| Control precision | better than 0.5dB | better than 1dB |
| Damage threshold | ≥2J/cm² | ≥2J/cm²@20ns |
| Fastest adjustment speed | ≥3dB/s | ≥1dB/s |
| Insertion loss | 10% | 10% |
| Communication interface | RS232/422/485 | RS232 |
| Power supply | DC 24V | DC 24V |
Build around your experiment
What to specify
Share these details with your enquiry so we can match the component to your optical setup.
- 01Operating wavelength, beam diameter and continuous or pulsed power.
- 02Required beam geometry, aperture, coating and polarization.
- 03Working distance, mechanical envelope and mounting interface.
Technical FAQ
Configuration questions for Variable Attenuator
Which fiber and connector does the Variable Attenuator use?
Communication interface: RS232/422/485 / RS232. Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
How should the Variable Attenuator be included in an optical power budget?
Active wavelength: 400-1100 nm · Wavelength: 400-1100 nm (Other wavelengths can be customized). Check the Laser components and accessories passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Does the Variable Attenuator require a controller?
Control precision: better than 0.5dB / better than 1dB · Power supply: DC 24V / DC 24V. Match supply voltage, analog or digital command range, connector pinout and default optical state to the instrument interlock. Confirm the unpowered state explicitly — it decides what happens to the link on a power failure.
Technical documents
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