ILX Lightwave LDX-36070-30 – Laser Diode Driver, High Power CW/QCW

The ILX Lightwave LDX-36070-30 is a high-power laser diode driver delivering 70 A in continuous wave (CW) mode and 160 A in quasi-continuous wave (QCW) mode. Designed for demanding scientific and industrial laser systems, this instrument provides precision current control with ±(0.1% of setting + 70 mA) accuracy and sub-100 ppm full-scale stability over one hour. The driver outputs 30 V compliance voltage and supports hard pulse operation from 40 µs to 2 s pulse widths at repetition rates up to 1000 Hz.

Technical Specifications Laser Diode Current Control

Output current (CW): 70 A

Output current (QCW): 160 A

Minimum drive requirement: > 10 A

Setpoint resolution: 10 mA

Setpoint accuracy: ±(0.1% of setting + 70 mA), ±(0.1% of FS + 80 mA)

1-hour current stability: ±(0.01% of setting + 7 mA) per hour, < 100 ppm FS

Output noise/ripple: < 70 mA RMS

Temperature coefficient: < 50 ppm FS/°C Output Characteristics

Laser compliance voltage: 30 V

Pulse width range: 40 µs to 2 s

Duty cycle: 0.5% to 20%

Pulse repetition rate: 0.1 to 1000 Hz

Rise/fall time: < 20 µs Measurements and Monitoring

Forward voltage resolution: 10 mV

Forward voltage accuracy: +0.05% of 20 mV

Photodiode monitor current range: 3 µA to 10000 µA

Photodiode monitor accuracy: +0.1% of FS

Photodiode reverse bias: 0 to 15 V

Thermistor input with programmable temperature limit and output disable

Key Features

Overcurrent, overvoltage, and thermal protection

Adjustable voltage and current limits with output shorting relays

Slow turn-on/off circuits and fast error detection

Transient protection during power-up and operation

5-digit green LED display

Temperature coefficient stability: < 50 ppm FS/°C

Typical Applications

High-power CW and QCW laser diode systems

Pulsed laser research and development

Industrial cutting and marking systems

Advanced scientific instrumentation

Compatibility & Integration

Computer interfaces: USB, RS-232, GPIB/IEEE-488

TTL trigger input and output with adjustable delay

Power requirement: 200–240 VAC, 50/60 Hz

Dimensions: 146 mm (H) × 483 mm (W) × 451 mm (D)

Weight: 16.3 kg