Femtosecond Pulse Shaping



MIIPS-HD is the first line of pulse shapers on the market that relies on a Hamamatsu's 2D (792×600 pixels) liquid crystal on silicon-spatial light modulator (LCOS-SLM), and uses diffractive shaping to enable independent phase and amplitude control, without using a polarizer. The system features enhanced power (pulse energy) handling capabilities and offers superior throughput for selected spectral ranges by utilizing SLMs with dielectric back mirrors. It is ideal for direct amplified pulse compression and shaping.

Product Variations:

- LCOS SLMs with metallic and dielectric back-mirrors – to be selected based on the laser source characteristics and application requirements.

Metallic back mirror Dielectric back mirror
01: 400-700nm 05: 350-420nm
07: 620-1100nm 04: 460-560nm
08: 1000-1550nm 06: 600-700nm
02: 750-850nm
03: 1000-1100nm

The pulse shaper's passband is normally optimized to fit the bottom-to-bottom spectral range of the user's laser source, subject to constrains imposed by the SLM ranges listed above.

Example: For a laser spectrum that fits within 700-800nm, an SLM with -07 coating is to be used but the shaper's passband is to be about 100nm, centered at 750nm.

- Dielectric mirror upgrade for 750-850nm (with an -02 SLM) and 1000-1100nm (with an -03 SLM) spectral ranges.

- Transmission grating (instead of a reflective grating) for the 750-850nm range; requires vertically polarized light at the input.

To be available soon:
- Water-cooled SLM housing for high-power applications.

  • Technical Specifications
  • Supporting Information
  • User References
SLM type: 2D array, LCOS
Pixel pitch: 20 µm
Number of pixels: 792
Number of independent control channels: ~400
Operating wavelength range*: 400 - 1550 nm
Spectral window&: up to 200 nm
Recommended 1/e2 beam diameter: 7 - 8 mm
Input polarization: linear, horizontal
Dimensions (L × W × H): 451 × 213 × 210 mm (17.75 × 8.375 × 8.25 in.)

Shaping of spectral phase and amplitude,# independent of the laser repetition rate.

* Several SLM types are available across the specified range
& Depends on the back-mirror type and the center wavelength; customized to fit the laser source
# Diffractive shaping mode is used to achieve the amplitude control