LDI-928

150 Amp Peak Quasi-CW Laser Diode Array Drivers

The LDI-928 provides high peak current for the SDL-3200 series linear or stacked quasi-cw laser diode arrays. Up to 150A peak current is available at pulse widths from 50 to 1000µs. Diode protection circuits, current limit and transient control provide reliable diode drive. Variable compliance allows different versions of the LDI-928 to drive 1 to 50 quasi-cw linear arrays in electrical series.

Optimized for low impedance laser diode arrays, the LDI-928 provides transient free, high current pulses from a low inductance output port. Pulse rise time, overshoot, droop and decay time are optimized for the long quasi-cw pulse widths used by linear array or stacked array QCW laser diodes. Pulse width capability extends from 50 to 1000µs, repetition rate is variable from 25 to 1000Hz. The Replica feature allows one LDI-928 to control the pulse timing of other LDI-928 units connected to the master unit and allows the use of complex digital waveforms.

Adjustable current limit protects the laser diode from accidental overdrive. Individual controls for each electronic function and backlit meter provide ease of use, while current reset, turn-on delay and error indicators enhance operator efficiency. Error indicators are provided for current limit, overload, open and short circuit and remote interlock.

The LDI-928 meets the requirements of 21 CFR 1040.10 laser safety regulations.

• LDI-928 Technical Specifications