Optotune’s disruptive 2D fast steering mirror solutions offer completely new design and integration possibilities for scanning and field of view expansion.
Advantages:
Large clear apertures and beam angles
2D beam deflection with a single optical element (reduced reflection loss, no beam-shift)
Robust voice-coil actuation
Optical real-time position feedback
Compact & lightweight
Customized coatings available
Dual axis fast steering mirror (FSM) with position feedback
Optotune’s dual axis fast steering mirror (FSM) offers the benefit of large deflections and large mirror size in a compact package. The actuator is based on proven voice-coil technology. A built-in position feedback allows it to be accurately controlled with a standard PID controller. The virtual rotation point of our 2D mirrors is close to the mirror surface which makes 2D scanning straight forward.
Optotune offers the MR-E-3, a full development kit including the mirror, control electronics and software.
The following table summarizes the main specifications of the different mirror products:
| Product | MR-15-30 | FMR-20 |
|---|---|---|
| Scan direction | 2D | 2D |
| Control | Closed loop on both axes | Open loop on both axes |
| Mechanical tilt angle | ±25° both axes | ±0.2° both axes |
| Mirror size | Ø15 mm | 20x20 mm² |
| Resolution (closed loop) | 22 μrad (with MR-E-2) | 4 μrad (with ICC-4C-2000) |
| Repeatability RMS (typical) | 40 μrad | -- |
| Full scale bandwidth | 20 Hz both axes | 250 Hz both axes |
| Settling time | 3 ms (0.1° mech. step) 13 ms (20° mech. step) | 4ms (0.2° mech. step) |
| Mirror coating | Protected gold, Protected silver, Dielectric VIS, Other coatings upon request | Protected gold, Dielectric NIR, Other coatings upon request |
| Mirror reflectivity | Protected gold coating: Avg >95% (800 nm – 2000 nm) | Protected gold coating: Avg >95% (800 nm – 2000 nm) |
| Mirror flatness P-V @549nm | λ/2 | 2λ |
| Connectivity | 2 coils, 4 analog sensor channels, I2C (temperature sensor, EEPROM) | 2 coils, I2C (temperature sensor, EEPROM) |
| Compatible controller | MR-E-3 | ICC-4C-2000 with Extension kit |
