Laser Diode Controllers LDC500 series — Laser diode drivers with integrated temperature controllers LDC500 Series Laser Diode Controllers Laser Diode Driver · 100 mA, 500 mA or 2 A source · Ultra-low drift (<10 ppm/°C) · <0.3 µA current noise (LDC500) · CC & CP mode dynamic switching · GPIB, RS-232 and Ethernet TEC Controller · 36 W output power · Ultra-high stability (0.0005 °C/°C) · Thermistor, RTD and IC sensors · Auto-tuning of loop parameters · CC & CT mode dynamic switching · LDC500 & LDC501 ... $2495 (U.S. list) · LDC502 ... $2795 (U.S. list) Stanford Research Systems Introducing the LDC500 Series Laser Diode Controllers — highly stable, low-noise current sources, with integrated temperature controllers — all at very affordable prices. The LDC500 series are the ideal instruments for controlling the current and temperature of your laser diodes. They have the performance and features you expect from instruments costing twice as much. The LDC501 has up to 500 mA of output current with less than 1.1 µA of rms noise, while the LDC500 has up to 100 mA of current and less than 0.3 µA of noise. The LDC502 provides up to 2 A of current. With a low-noise current source, a 36 W high-precision temperature controller, and standard computer interfaces including Ethernet, the LDC500 series is the right choice for your laser diode testing and control applications. Easy-To-Use Interface The LDC500 series have an intuitive user interface, and many first time users will be able to operate the instrument without having to crack open the manual (although we do recommend reading the manual). Unlike competitive models, the LDC500 series controllers have a dedicated front-panel display for parameter entry. You don’t have to sacrifice monitoring temperature or current to simply change an instrument setting — you have a separate two-line, blue alpha-numeric display for that. In addition, bright 5-digit green LED displays constantly monitor current and temperature, and are large enough to easily read from anywhere in the lab.

LDC500 Series Laser Diode Controllers Laser Diode Protection Multiple laser diode protection features, including slow start turn-on, adjustable current limits, and adjustable compliance voltage, keep your laser diodes safe when unexpected events occur. Fast clamping and shut down provide extra protection against intermittent contact with the laser. Combined, these features provide trouble-free, safe control of your laser diode. Linear Power Supplies Independent linear power supplies are used for the laser diode controller and the temperature controller. The supplies are designed with a magnetically...

Laser Diode Current Source Current Source Range 0 to 100 mA, 0 to 50 mA (LDC500) 0 to 500 mA, 0 to 250 mA (LDC501) 0 to 2 A, 0 to 1 A (LDC502) Setpoint resolution 1 µA (LDC500), 10 µA (LDC501), 0.1 mA (LDC502) Accuracy ±0.02 % of full scale Output impedance >1 MΩ (DC) Stability Thermal <10 ppm/°C Short-term (1 hr.) <5 ppm full scale Long-term (24 hr.) <15 ppm full scale Noise (10 Hz to 1 MHz) LDC500 0.9 µA rms (high range / high BW) 0.6 µA rms (high range / low BW) 0.5 µA rms (low range / high BW) 0.3 µA rms (low range / low BW) LDC501 4.5 µA rms (high range / high BW) 1.5 µA rms (high range...

Setpoint resolution Setpoint accuracy Max. power Compliance voltage Current noise Current limits Range Accuracy About Thermal Stability Temperature fluctuations in a typical laboratory environment can often exceed several degrees Celsius over the course of a day. Small temperature changes can mean significant current changes in your laser diode if your controller is not up to the task. Temperature Sensors Thermistors RTD IC voltage sensors IC current sensors 10 to 500 kΩ (10 µA, 100 µA, 1000 µA excitation) Pt-100, Pt-1000 (1 mA excitation) LM335 and equivalent AD590 and equivalent Measurement...