Holoeye PLUTO-2.1 NIR-015 Pure-Phase Spatial Light Modulator

Overview

The Holoeye PLUTO-2.1 NIR-015 is a high-resolution, pure-phase spatial light modulator (SLM) engineered for precision wavefront shaping in the near-infrared (NIR) spectral band. Based on transmissive liquid crystal on silicon (LCoS) technology, it operates as a programmable diffractive optical element—enabling dynamic control of phase distribution across a 1920 × 1080 pixel active area with 8 µm pixel pitch. Unlike intensity-modulating devices, the PLUTO-2.1 NIR-015 applies spatially varying phase delays without significant amplitude modulation, making it ideal for coherent optical systems requiring high diffraction efficiency and low zero-order leakage. Its operational bandwidth spans 650–1100 nm, with factory calibration optimized for peak performance at 1064 nm—a key wavelength for ultrafast laser pulse shaping, adaptive optics, and quantum optics experiments. The device functions as a binary or multi-level phase shifter depending on input gray-scale mapping, supporting both static hologram loading and real-time video-rate modulation at up to 60 Hz.

Key Features

• 1920 × 1080 native resolution pure-phase LCoS SLM with 8 µm pixel pitch and >99% fill factor
• Optimized for 650–1100 nm spectral range; calibrated for high phase fidelity at 1064 nm
• USB-controlled driver unit enabling real-time adjustment of gamma curve and voltage range to match specific laser wavelengths and polarization states
• HDMI/VGA/DisplayPort compatibility—phase patterns loaded via standard graphics card output using green-channel 8-bit grayscale encoding
• Hot-pluggable design with plug-and-play integration into existing optical benches and laser systems
• Low temporal phase drift (<0.02π RMS over 1 hour) and high spatial uniformity (<±0.05π phase error across active area)

Sample Compatibility & Compliance

The PLUTO-2.1 NIR-015 is designed for use with collimated, linearly polarized NIR beams (e.g., Ti:sapphire, Nd:YAG, fiber lasers). It requires external beam conditioning optics—including quarter-wave plates for circular polarization handling—and is compatible with standard optical mounts (e.g., SM1-threaded housings). While not a standalone analytical instrument, it serves as a critical subsystem in hyperspectral imaging setups, Fourier-transform spectroscopy, and structured illumination microscopy where programmable illumination patterning is required. The device complies with CE marking requirements for electromagnetic compatibility (EMC Directive 2014/30/EU) and low-voltage safety (LVD Directive 2014/35/EU). Its firmware architecture supports audit-ready configuration logging, facilitating traceability in GLP-compliant optical metrology workflows.

Software & Data Management

The PLUTO-2.1 NIR-015 ships with Holoeye’s proprietary SLM Control Software (v3.x), providing intuitive GUI-based phase pattern generation—including preloaded algorithms for vortex beams, Bessel beams, kinoforms, and Zernike mode decomposition. Users may also import custom phase maps from MATLAB, Python (NumPy arrays), or common image formats (BMP, TIFF). All software modules support timestamped parameter export in CSV and HDF5 formats. For integration into automated test sequences, a documented C++/Python API enables direct memory-mapped frame buffer access and synchronized triggering via TTL input. The USB driver supports Windows 10/11 and Linux (kernel ≥5.4); no proprietary GPU drivers are required.

Applications

• Adaptive optics correction in astronomical and ophthalmic imaging systems
• Dynamic holographic optical tweezers for single-cell manipulation
• Programmable illumination in computational spectroscopy and snapshot hyperspectral imaging
• Ultrafast pulse shaping in CPA and OPCPA laser systems
• Quantum information experiments involving spatial-mode entanglement and orbital angular momentum multiplexing
• Calibration reference for interferometric wavefront sensors (e.g., Shack-Hartmann arrays)

FAQ

What is the maximum phase depth achievable with the PLUTO-2.1 NIR-015?

At 1064 nm, the device delivers up to 2π phase modulation with <0.03π RMS deviation across the full aperture when operated within its specified voltage and temperature range.
Can the SLM be used with femtosecond pulses?

Yes—its sub-20 ps electro-optic response time and high damage threshold (>1 J/cm² at 1064 nm, 10 ns pulse width) support safe operation with amplified ultrafast laser systems.
Is the device compatible with LabVIEW or MATLAB automation frameworks?

Yes—Holoeye provides native LabVIEW VIs and MATLAB toolboxes with full documentation for real-time phase map streaming and closed-loop control.
Does the PLUTO-2.1 NIR-015 require thermal stabilization?

Ambient operation between 15–30 °C is sufficient for stable performance; active cooling is not required unless integrated into high-duty-cycle industrial environments.
How is calibration data provided and maintained?

Each unit ships with a factory-measured phase-voltage lookup table (LUT), and users can perform in-situ recalibration using interferometric feedback or camera-based iterative algorithms.