Auniontech SOLARLS LA-Series Motorized Optical Power Attenuator
| Brand | Auniontech |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | LA-Series Polarization-Based Motorized Attenuator |
| Pricing | Upon Request |
| Wavelength Range | 250–2000 nm |
| Clear Aperture | Ø18 mm |
| Max Beam Diameter (Recommended) | Ø15 mm |
| Divergence Tolerance | ≤2 mrad |
| Attenuation Range | 0.1–98% (varies by wavelength) |
| LIDT | >10 J/cm² @ 1064 nm, 10 ns |
| Extinction Ratio | ≥1000:1 (1064/1030 nm), ≥500:1 (355/343 nm), ≥200:1 (266/257 nm) |
| Actuation Time | <0.2 s |
| Control Interface | RS232/USB + Dedicated Software |
Overview
The Auniontech SOLARLS LA-Series Motorized Optical Power Attenuator is a precision polarization-based instrument engineered for stable, repeatable, and damage-resistant attenuation of continuous-wave (CW), quasi-CW (QCW), and ultrafast laser beams across the deep-ultraviolet to near-infrared spectrum (250–2000 nm). Its core optical architecture integrates a high-damage-threshold half-wave plate (λ/2) and a high-extinction-ratio Brewster-angle thin-film polarizer—enabling calibrated, non-absorptive beam power control via rotation-induced polarization state modulation. Unlike neutral-density filter-based or aperture-iris attenuators, this design avoids thermal lensing, spatial non-uniformity, and spectral distortion, making it suitable for high-fidelity applications in ultrafast science, quantum optics, and industrial laser processing where beam quality preservation is critical.
Key Features
- Large Clear Aperture: Ø18 mm unobstructed optical path supports high-energy, large-diameter beams (recommended max Ø15 mm), minimizing clipping and wavefront distortion.
- High Laser-Induced Damage Threshold (LIDT): Certified >10 J/cm² at 1064 nm (10 ns pulse width); >5 J/cm² at 532 nm; >3 J/cm² at 355 nm; >2 J/cm² at 266 nm—validated per ISO 21254 standards.
- Wavelength-Agile Performance: Optimized polarization extinction ratios (≥1000:1 at 1064/1030 nm; ≥500:1 at 355/343 nm; ≥200:1 at 266/257 nm) ensure consistent attenuation fidelity across UV, visible, and NIR bands.
- Precision Motorized Control: Stepper-motor-driven waveplate rotation enables reproducible attenuation steps with <0.2 s actuation time and sub-degree angular resolution.
- Beam Preservation: Non-absorptive, reflective-polarizer design eliminates thermal loading, spectral shift, and polarization-dependent loss—critical for femtosecond pulse integrity and M²-sensitive applications.
Sample Compatibility & Compliance
The LA-Series attenuator accommodates collimated or low-divergence beams (≤2 mrad) and is compatible with standard optical mounts (e.g., SM1-threaded housings). It meets mechanical and optical safety requirements for Class 3B and Class 4 laser systems per IEC 60825-1:2014. All optical coatings are certified for environmental stability under ISO 9022-2 (humidity) and ISO 9022-3 (temperature cycling). The device complies with RoHS 2011/65/EU and REACH (EC) No. 1907/2006 directives. While not inherently FDA 21 CFR Part 11 compliant, its software interface supports audit-trail logging when integrated into validated laboratory information management systems (LIMS) operating under GLP/GMP frameworks.
Software & Data Management
Control is executed via Auniontech’s cross-platform LA-Control Suite (Windows/macOS/Linux), supporting RS232 and USB virtual COM port communication. The software provides real-time attenuation calibration tables per wavelength, user-defined attenuation profiles (linear, logarithmic, stepwise), and scriptable sequences via Python API (included). All parameter changes—including setpoint, dwell time, and motor position—are timestamped and exportable as CSV or HDF5 files. Firmware updates are performed in-field without hardware modification, and version history is retained in non-volatile memory for traceability during ISO/IEC 17025 audits.
Applications
- Laser micromachining process optimization requiring precise energy-per-pulse tuning
- Multi-photon polymerization where nonlinear excitation thresholds demand sub-percent power stability
- Ultrafast pump-probe experiments requiring synchronized, jitter-free attenuation between pump and probe arms
- Calibration of photodetectors, power meters, and camera-based beam profilers across multiple wavelengths
- Quantum optics setups involving entangled photon sources where polarization purity must be preserved during intensity scaling
- Industrial laser welding and ablation R&D where long-term thermal drift of attenuation must remain below ±0.3% over 8-hour operation
FAQ
Is the LA-Series compatible with femtosecond Ti:sapphire lasers?
Yes—its all-reflective, dispersion-compensated optical path preserves pulse duration and avoids GDD accumulation; recommended for pulses ≥50 fs.
Can attenuation be controlled remotely via LabVIEW or MATLAB?
Yes—the provided DLL and Python API enable native integration with LabVIEW (via Call Library Function Node) and MATLAB (via system command or serial interface).
What maintenance is required for long-term LIDT performance?
No routine maintenance is required; however, periodic inspection of input/output window cleanliness using ISO 10110-compliant cleaning protocols is advised to prevent localized fluence enhancement.
Does the device support analog voltage input for open-loop control?
No—LA-Series uses closed-loop stepper motor control exclusively; analog interface is not supported to maintain positional repeatability and avoid drift.
Is NIST-traceable calibration documentation available?
Calibration certificates (including wavelength-specific extinction ratio and attenuation linearity data) are provided with each unit; NIST-traceable power meter validation can be arranged through Auniontech’s metrology partners upon request.
