UV hardend Spatial Light Modulator SLM-250 (:502KB)

Reflective LCOS (Phase only)

SANTEC has introduced a ultraviolet (UV) hardened spatial light modulator (SLM) based on Liquid Crystal on Silicon (LCOS) technology. This product support WUXGA (1920×1200) and Full-HD (1920×1080) video resolutions, the 2nd generation. SLMs from Santec will still offer 4 times better 10-bit (1024 gray level) and 10 times better phase stability (when compared with conventional products in the market) that was found in the 1st gen. SLMs.

The UV model SLM (SLM-250) has a 42 times higher UV resistance specification when compared to the visible to Infra-Red (IR) wavelength SLM-200. A power density up to 10mW/cm2 is sustainable using a novel liquid crystal and dielectric mirror design.

The SLM-250 follows the popular first generation SLM-100 from Santec that has been deployed in various industrial and scientific applications, including beam shaping, computer-generated holograms, optical manipulation, and wave-front compensation.


  • Laser processing
  • Biology sensing
  • 3D printing
  • IC triming
SLM-250 Specifications
Wavelength range 365 550 nm
AR coat range 365 550 nm
AR coat reflectance 0.7 % Angle of incidence = 0degree
Panel size (H)15.42 x (V)9.66 mm Active area
Pixel resolution (H)1920 x (V)1200 pixel
Pixel size / pitch 7.8 / 8.0 μm
Panel reflectivity Typ.70 % Depending on specied wavelength range
Aperture ratio 95 %
Gray level 10 (1024) Bit
DVI video frame rate 60 or 120 Hz
LCOS drive frequency 1200 Hz Factory default setting
Phase depth rad.
Phase uctuation Typ. 0.003π rad.
Response time Typ. 50 ms
Signal format D-DVI 10-bit using RGB 8-bit, 3 colors
Storage temperature 0 40 degC
Optical power handling Typ. 40 MW/cm2 Peak power@355nm, pulse laser, pulse width 260psec, repetition rate 100Hz
10.0 mW/cm2 @365nm, 24H/day continuous operation
Dimensions 122 x 122 x 38.3 mm
Control software GUI software for Windows

Figure 1 SLM-250, Lifetime test as a function of optical power handling.
Figure 1 SLM-250, Lifetime test as a function of optical power handling.


Operational Manual

SLM-250 (3.8MB)