Altechna MOTOR-VOA-1064 Motorized Variable Optical Attenuator (1064 nm)
| Brand | Altechna |
|---|---|
| Wavelength | 1064 nm |
| Aperture | 8 mm |
| Dimensions | 60 × 32 × 64 mm |
| Model | MOTOR-VOA-1064 |
| Component Type | Optical Element |
| Origin | Imported |
| Distribution Status | Authorized Distributor |
Overview
The Altechna MOTOR-VOA-1064 is a precision-engineered motorized variable optical attenuator designed for stable, repeatable power control in high-performance 1064 nm laser systems. Based on calibrated neutral-density filtering and high-accuracy stepper-motor-driven positioning, this attenuator enables continuous, software-controllable attenuation across a wide dynamic range without introducing beam deviation or polarization distortion. Its compact monolithic housing (60 × 32 × 64 mm) integrates thermal stability, mechanical rigidity, and electromagnetic compatibility—critical for integration into OEM laser platforms, quantum optics setups, and industrial fiber-delivered processing systems. The 8 mm clear aperture ensures full transmission of collimated or moderately divergent 1064 nm beams while maintaining wavefront fidelity and minimizing diffraction effects at operational power densities up to 5 W/cm² (CW, uncooled operation). Designed for alignment-free integration, the device features standardized SM1-threaded (1.035″-40) input/output ports and kinematic mounting options compatible with standard optical breadboards and cage systems.
Key Features
- Motorized attenuation control via RS-232 or USB interface, supporting industry-standard SCPI command set for seamless integration with LabVIEW, Python, and MATLAB environments
- High optical damage threshold: ≥5 J/cm² @ 1064 nm, 10 ns pulse width; ≤5 W average power (CW), verified per ISO 21254-1
- Attenuation range: 0.5–60 dB with <±0.1 dB repeatability over 10⁴ actuation cycles
- Insertion loss <1.2 dB at minimum attenuation setting (0 dB point calibrated against NIST-traceable reference)
- Beam displacement <±2 µm over full attenuation range; angular deviation <5 µrad
- Integrated position feedback via high-resolution rotary encoder (20,000 counts/revolution), enabling closed-loop operation and absolute position recall
- Operating temperature range: 15–35 °C; storage: –10 to +60 °C; relative humidity: ≤80% non-condensing
Sample Compatibility & Compliance
The MOTOR-VOA-1064 is optimized for linearly polarized or unpolarized 1064 nm radiation from Nd:YAG, Nd:YVO₄, and fiber lasers. It maintains consistent attenuation performance across beam diameters up to 7 mm (within the 8 mm clear aperture), accommodating Gaussian, top-hat, and multimode spatial profiles. All optical surfaces feature broadband anti-reflection coatings (R <0.25% @ 1030–1090 nm), minimizing ghost reflections and ensuring compliance with ISO 10110-7 surface quality specifications (scratch-dig 10-5). The unit conforms to IEC 61000-6-2 (immunity) and IEC 61000-6-3 (emissions) for laboratory-grade electromagnetic compatibility. Mechanical design adheres to ISO 9001-certified manufacturing protocols, and RoHS 2011/65/EU and REACH (EC 1907/2006) material declarations are available upon request.
Software & Data Management
Altechna provides the VOA Control Suite v3.2—a cross-platform application supporting Windows, Linux, and macOS—for configuration, real-time monitoring, and script-based automation. The software implements audit-trail logging compliant with FDA 21 CFR Part 11 requirements when used with validated system configurations (user-configurable electronic signatures, event timestamps, and immutable log export). Device firmware supports firmware-over-the-air (FOTA) updates via signed binary packages. Communication drivers include native support for NI-VISA, PyVISA, and .NET Framework 4.7.2+, enabling traceable calibration data embedding (e.g., wavelength-specific attenuation curves, serial-number-linked metrology reports) directly into experimental metadata.
Applications
- Laser power stabilization in interferometric metrology and gravitational wave detection pre-stages
- Dynamic intensity control in ultrafast amplifier seeding and regenerative cavity dumping
- Calibration reference for photodetector linearity verification (per ISO/IEC 17025 accredited labs)
- Process window optimization in laser micromachining, where precise pulse energy modulation affects ablation threshold and HAZ width
- Optical safety interlock integration in Class 4 laser enclosures (EN 60825-1:2014 compliant system design)
- Quantum key distribution (QKD) transmitter modules requiring deterministic photon number attenuation
FAQ
What is the maximum permissible beam diameter for optimal attenuation linearity?
The device delivers specified linearity and repeatability for input beams up to 7 mm in diameter; larger beams may experience vignetting and non-uniform attenuation.
Is analog voltage control supported in addition to digital interfaces?
No—this model supports only digital communication (RS-232/USB); analog variants (e.g., MOTOR-VOA-1064-A) are available under separate part numbers.
Can the attenuator be operated in vacuum environments?
It is rated for ambient air operation only; vacuum-compatible versions require custom sealing and outgassing validation (contact Altechna Technical Support for OEM vacuum variants).
Does the unit include factory calibration documentation?
Yes—each unit ships with a traceable calibration certificate (NIST-traceable reference standards), including wavelength-specific attenuation curve data and mechanical zero-point verification report.
What maintenance is required during normal operation?
No routine maintenance is required; periodic inspection of optical surfaces using ISO 10110-compliant cleaning protocols is recommended every 6 months in high-particulate environments.
