• Constant current source
• Up to 300 mA with 0.001 mA step size resolution
• Integrated TEC driver for temperature stabilization
• Anode or Cathode grounded diode configuration selectable via onboard jumpers
• Eurocard rack compatible (not included)
The DLD is a simple constant current source for both positive and negative current that can drive a laser diode in cathode or anode grounded configuration up to 300 mA. It also has a TEC driver that can supply up to 3.5 A of to provide thermal control to the laser diode.
The unit comes with an LCD display, user buttons, BNC input for slow current modulation, USB connector for serial communication and a 9 pin D-Sub connector for analog outputs and inputs to control current and Peltier voltage, sense the temperature in a thermistor bridge and optical power if the laser diode comes with a monitor diode on a 24HP front panel.
The device is a modular unit to be powered by a Eurocard rack system (sold separately) and does not require a driver to operate. Cables to Laser diode head not included. The host and device communicate only by a serial interface.
Device Specifications
| Current Driver | |
| Max current | ±300 mA |
| Current resolution | 0.001 mA |
| Maximum driving voltage | ± 10 V |
| External current modulation | -10 · · · 10 V |
| Current modulation gradient | 3.4 mA/V |
| Modulation bandwidth (3dB) | 130 kHz |
| TEC Driver | |
| Max Current | ± 3.5 A |
| Max Voltage | ± 4 V |
| Calibrated for thermistor sensor | 10 kΩ @ 25◦C |
| Temperature resolution | 0.001 K |
| Temperature range | 10 · · · 40 ◦C |