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High Power Laser Diode Drivers

  • 14 models with output current up to 220A QCW and 125A CW and compliance voltage from 4V to 70V
  • Proven high power laser diode protection features
  • Precision current control with 10 mA setpoint resolution
  • Hard pulse capability with pulse widths to 2 seconds and duty cycle to 90%
  • Forward voltage and photodiode current measurement
High Power Laser Diode Driver

LDX-36000 Series High Power Laser Diode Driver


Model LDX-32420 LDX-36010-12 LDX-36025-12 LDX-36050-12 LDX-36085-12 LDX-36125-12
Maximum CW Current Output 10A / 20A 10A 25A 75A 85A 125A
Maximum QCW Current Output -------- 20A 50A 100A 170A 220A
Setpoint Resolution 1 mA 10 mA 10 mA 10 mA 10 mA 10 mA
Noise and Ripple < 5 mA < 5 mA < 10 mA < 20 mA < 40 mA < 60 mA
Short Term Stability < 100 ppm < 100 ppm < 100 ppm < 100 ppm < 100 ppm < 100 ppm
Compliance Voltage 4V 12V 12V 12V 12V 12V
Analog Modulation Input Yes No No No No No
Constant Power Operating Mode Yes No No No No No
Computer Interface GPIB and USB GPIB GPIB GPIB GPIB GPIB
Laser Diode Protection
  • Intermittent contact protection
  • Adjustable forward voltage limit
  • On/off shorting semiconductor switch
  • Slow start circuit
  • Floating output
  • Independent adjustable current limit
  • Power line surge and EFT transient protection

Model LDX-36010-35 LDX-36018-35 LDX-36040-30 LDX-36070-30 LDX-36125-24 LDX-36010-70 LDX-36018-70 LDX-36040-70
Maximum CW Current Output 10A 18A 40A 70A 125A 10A 18A 40A
Maximum QCW Current Output 20A 40A 80A 160A 220A 20A 40A 80A
Setpoint Resolution 10 mA 10 mA 10 mA 10 mA 10 mA 10 mA 10 mA 10 mA
Noise and Ripple < 10 mA < 10 mA < 10 mA < 40 mA < 60 mA < 10 mA < 10 mA < 10 mA
Short Term Stability < 100 ppm < 100 ppm < 100 ppm < 100 ppm < 100 ppm < 100 ppm < 100 ppm < 100 ppm
Compliance Voltage 35V 35V 30V 30V 24V 70V 70V 70V
Analog Modulation Input No No No No No No No No
Constant Power Operating Mode No No No No No No No No
Computer Interface GPIB GPIB GPIB GPIB GPIB GPIB GPIB GPIB
Laser Diode Protection
  • Intermittent contact protection
  • Adjustable forward voltage limit
  • On/off shorting semiconductor switch
  • Slow start circuit
  • Floating output
  • Independent adjustable current limit
  • Power line surge and EFT transient protection