Within our work on laser development we have developed a laser diode current controller. There are two versions:
- an ultra-low noise current controller (up to 140 mA)
- a low-noise current controller (up to 400 mA)
Parameters | Ultra-Low Noise | Low Noise | Units | Remarks |
---|---|---|---|---|
Output Current Range | 0 – 140 | 0 – 400 | mA | Other Currents on request |
Output Current Resolution | 22.4 | 64 | µA | |
Output Current Accuracy | 0.1 | 0.1 | % FS | |
Laser Output Compliance Voltage | 1.7 – 2.9 | 1.7 – 2.9 | V | Other Voltages on request |
Temperature Coefficient | < 25 | < 85 | ppm FS/°C | |
Output Current Short-Term Stability | < 0.9 | < 0.9 | ppm FS | 10 minutes |
Output Current Long-Term Stability | < 3.3 | < 3.3 | ppm FS | 1 hour |
Output Current RMS Noise | < 21 | < 60 | nA | 10 kHz – 100 kHz |
< 92 | < 265 | nA | 10 kHz – 1 MHz | |
Output Current Noise density | < 300 | < 850 | pA/sqrt(Hz) | 10 kHz – 1 MHz |
Current Limit Range | 0 – FS | 0 – FS | mA | |
Current Limit Resolution | 70 | 200 | µA | |
Current Limit Accuracy | 0.1 | 0.1 | % FS | |
Display Resolution | 0.1 | 1 | mA | |
External Analog Modulation Input Impedance | 1k | 1k | Ohm | Slow Mod |
50 | 50 | Ohm | Fast Mod | |
External Analog Modulation Input Range | -10 – 10 | -10 – 10 | V | Slow Mod |
-10 – 10 | -10 – 10 | V | Fast Mod | |
External Analog Modulation Transfer Function | 8 – FS | 12 – FS | mA/V | Slow Mod (Adjustable) |
1 | 1 | mA/V | Fast Mod | |
External Analog Modulation Bandwidth (3 dB) | 200 | 200 | kHz | Slow Mod depending on Laser Diode |
up to 150 | up to 150 | MHz | Fast Mod depending on Laser Diode | |
Display Type | LCD Backlit | LCD Backlit |
The data sheet is available here.
Please contact Thorsten Führer or Benjamin Rein for more details.
thorsten.fuehrer@physik.tu-...;
benjamin.rein@physik.tu-...;
Prof. Dr. Thomas Walther
Laser und Quantenoptik
Institut für Angewandte Physik
Fachbereich 05 - Physik
Technische Universität Darmstadt
Schlossgartenstr. 7
D-64289 Darmstadt
+49 6151 16-20831 (Sekretariat)
+49 6151 16-20834 (Fax)
Thomas.Walther@physik.tu-...
03.04.19