PLUTO: High-Resolution LCOS Phase Only Spatial Light Modulators
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The PLUTO phase modulator models are based on reflective LCOS microdisplays with 1920 x 1080 pixel resolution and are optimized to provide a phase shift above 2 π up to 1550 nm. The PLUTO devices are packaged in an very small housing to ensure an easy integration into optical setups and applications. The PLUTO phase modulator series includes 4 versions, optimized for the visible, a version optimized for a broad wavelength band centered at 850 nm, a version for the near infrared around 1064 nm and a version optimized for typical telecommunication wavelengths around 1550 nm to ensure optimal results for specific requirements.
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Applications range from holography, lithography, optical metrology, interferometry, optical tweezers, wave front corrections to phase shifting applications. The high fill factor of the display also ensures a high light efficiency.
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The displays show a reflectivity of approx. 60% and diffraction efficiencies of more than 80%. Thereby a total light efficiency of more than 50% per addressable diffractive device is possible. The driving of the PLUTO devices is as easy as with all HOLOEYE Spatial Light Modulators. A HDTV graphics card is sending HDTV resolution images to the device (via DVI) with a frame rate of 60 Hz. The Pluto Modulators are easily addressed as an external monitor.
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 PLUTO LCOS Phase Only Spatial Light Modulators - Data Sheet
PLUTO - Optimized for different Wavelengths Ranges
HOLOEYE provides 4 versions of the PLUTO modulator:
- PLUTO-VIS:This version is optimized for the visible because of a broadband AR (anti reflection) coating for this spectral range.
- PLUTO-NIR: This version is optimized for the near infrared around 1064 nm because of an AR coating for 1064 nm and a thicker LC layer.
- PLUTO-NIR-2: This version is usable for a broad wavelength band around 850 nm and in the lower visible.
(NEW VERSION: PLUTO-NIR-2 Phase Only SLM - Data Sheet)
- PLUTO-TELCO: This version is optimized for common telecommunication wavelenghts ranges around 1550 nm.
PLUTO Phase Modulator - Microdisplay Features
| Pixels |
Pixel Pitch |
Fill Factor |
Panel Size |
Addressing |
Signal Formats |
Frame Rate |
| 1920 x 1080 |
8.0 µm |
87% |
0,7" |
8 Bit |
DVI - HDTV Resolution |
60 Hz |
PLUTO Phase Modulator - Special Optical Features:
| - Reflective LCOS Microdisplay |
- Phase Only Modulation |
| - 2 π Phase Shift up to 1550 nm |
- 8.0 µm Small Pixel Size |
PLUTO Phase Modulator - Software Features:
| Driver Software: |
Brightness / Contrast / Geometry / Gamma Control |
| Application Software: |
Basic DOE computations; Generation of optical functions (Circular Aperture, Fresnel Zone Lens, Axicon, Single and Double Slit ...); Gratings (incl. Blazed and Sinusoidal) |
| Live Hologram Calculation: |
Software for real-time live hologram calculation which is processed directly on the graphics card GPU |
| Labview SubVi: |
Labview SubVi for enhanced addressing of optical functions (for implementation in user defined Labview programm for e.g. closed loop applications). |
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The PLUTO devices are highly programmable and come with a driver software to controll all settings and relevant image parameters. The software provides a very easy gamma control to configure the modulator for different applications which is a comfortable tool to tailor the performance of the device to the desired result. Besides geometry and gamma corrections different sequences can also be addressed to the drive board.
In addition, tailored Spatial Light Modulator application software allows easy generation of diverse dynamic optical functions like gratings, lenses, axicons and apertures, as well as the calculation of diffractive optical elements (DOE) based on user defined images.
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Additional PLUTO Software Features
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The PLUTO Spatial Light Modulator kits are delivered with an extended software package. A software for real-time live hologram calculation which is processed directly on the graphics card GPU is now included. This can be a helpful tool for optical tweezer or holographic projection applications.
A Labview SubVi for enhanced addressing of optical functions is also included. This can be used to be implemented in a user defined Labview programm for e.g. closed loop applications.
Also included are additional configuration files for stabilized addressing and more accurate adaptation of the SLM for various applications.
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PLUTO - Compact Design, High Resolution, Small Pixel
With a pixel pitch of only 8.0 µm, HDTV resolution (1920 x 1080 pixel), a high light efficiency (due to the reflective structure of the microdisplay) and an image refresh frame rate of 60 HZ via DVI, the PLUTO phase only modulators are suitable for a wide range of applications. Additionally the easy adressing and the small proportions of the PLUTO devices (housing only 121 x 73 x 22 mm) ensure an easy integration.
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