Transmissive Optical Addressing Spatial Modulator
TSLM-OA series modulator is based on the principle of optical addressing, achieving real-time controllability of the intensity distribution (or phase distribution) of laser beams at various points in space. Compared with commonly used electrically addressed spatial light modulators, it effectively avoids the black gate effect caused by pixel electrodes and has advantages such as high transmittance and no multi-level diffraction spots. Due to the adoption of a transmissive design and integrated packaging, the device only needs to be inserted in areas where laser intensity distribution adjustment is required, and can be removed when beam modulation is not needed. It is convenient to use and is an ideal choice for controlling the beam intensity distribution (or phase distribution) of high-power laser systems.
Product advantages
Transmissive type, easy to use
Large aperture for light transmission
Wide modulation wavelength bandwidth range
Avoiding the black grid effect and multi-level diffraction spots caused by pixel electrodes
High transmittance
Integrated packaging
Application area
High power laser system
Adaptive optics system
Laser additive manufacturing
Laser processing
Optical information processing
Technical Parameters
Main specifications of amplitude type spatial light modulator | |||||
Working Wavelength | 1000nm-1100nm | ||||
Transmittance Rate | ≥80% | ||||
Models | A | B | C | D | E |
Panel Resolution | ≥500×500 | ≥500×500 | ≥500×500 | ≥400×400 | ≥200×200 |
Active Area | ≥24mm×24mm or customized | ≥24mm×24mm | ≥20mm×20mm | ≥15mm×15mm | ≥10mm×10mm |
Contrast | ≥100:1 | ≥50:1 | ≥50:1 | ≥50:1 | ≥20:1 |
Damage Threshold | ≥300mJ/cm2 | ≥100mJ/cm2 | ≥100mJ/cm2 | ≥100mJ/cm2 | ≥50mJ/cm2 |
Spectral Modulation Depth | ≤3% | ≤3% | ≤5% | ≤5% | ≤10% |
Response Time | 100ms | 100ms | 100ms | 100ms | 100ms |
External Dimensions | ≤ 90mm (direction of light) × 135mm × 75mm (height) (HDMI connectors are in the 135mm direction, 135mm not include connector) | ||||
Notes:
(1) The main specifications of the phase type spatial light modulator are same as above (except for the contrast index); Phase modulation capability>λ.
(2) When using an amplitude type spatial light modulator, polarization devices with parallel polarization directions must be installed before and after the modulator; When using a phase type spatial light modulator, at least a polarizing device aligned with the liquid crystal orientation should be configured before the incident modulator.