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The SRS LDC500 Laser Diode Controller is an ideal instrument for controlling the current and temperature of your laser diodes. It has the performance and features you expect from instruments costing twice as much. The LDC500 has up to 100 mA of output current with less than 0.3 µA of rms noise. The SRS LDC500 is a 36 W high-precision temperature controller with standard computer interfaces, including Ethernet. It has multiple laser diode protection features, including slow start turn-on, adjustable current limits, and adjustable compliance voltage. Specifications. Current Source Range: 0 to 100 mA, 0 to 50 mA. Setpoint resolution: 1 µA. Accuracy: ±0.02 % of full scale. Output impedance: >1 M-ohm (DC). Thermal Stability: <10 ppm/°C. Noise (10 Hz to 1 MHz): 0.9 µA rms (high range / high BW), 0.9 µA rms (high range / low BW), 0.5 µA rms (low range / high BW), 0.3 µA rms (low range / low BW). Compliance voltage Range: 0 to 10 V, programmable. Resolution: 10 mV. Accuracy: 0.2 V. Monitor Photodiode Bias voltage: 0 to 5 V, programmable. PD current range: 0 to 5,000 µA. Temperature Control range: IC sensor -55 °C to +150 °C, Resistor sensor -150 °C to +250 °C (10 ohm to 500 k-ohm). Setpoint resolution Temperature: 0.001 °C. TEC Output Source type: Linear, bipolar current source. Current range: -4.5 A to +4.5 A.
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