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125 Amp Laser Diode Driver with Optimized Protection Features for High Power Laser Bars, Stacks and Arrays

  • 120 Amp HP Laser Diode Driver
  • laser diode driver pulse and CW rear panel
  • labview drivers screen capture image

Request Quote   Ships: 3 weeks | Model LDI-344

Key Features
  • Protection Features Optimized for High Power Laser Diode Stacks, Bars and Arrays
  • CW and QCW Modes; QCW Pulse Width Range 29 μs to CW
  • Integrated QCW Pulse Generator and Remote Trigger Input
  • Open Circuit Detection and Fast Shut-Down with Analog Control Loop
  • RS232 and USB with LabView Drivers

Price and Delivery Quote

You will receive factory-direct price with no mark-ups

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MODEL LDI-344
PRICE Request Price
LASER DIODE CURRENT OUTPUT (CW / QCW)
  • Output Current Range: 125.00 Amps
  • Compliance Voltage Range: 0.12 -12.00 Volts
  • Current Noise & Ripple (rms): < ± 0.5% ( of full scale current )
  • Current Setpoint Resolution: 30 mA
  • Current Setpoint Accuracy: ± 0.5%
  • Current Stability (4 hours): ≤ 300 ppm
  • Current Limit Setpoint Accuracy: ± 2%
  • Photodiode Current Measurement Accuracy: ± 0.5%
  • Photodiode Current Measurement Range: 0.00 - 4,000 μA
INTEGRATED LASER DIODE PROTECTION FEATURES
  • Soft-Start Current Ramp to Setpoint (User Programmable)
  • Soft-Start Current Ramp Factory Default Set to 300 Milliseconds
  • Current Limit
  • Open Circuit Detection
  • ESD and Power Surge Clamp
  • Reverse Voltage Transient Clamp
  • AC Line Filter
  • Rear Panel Keylock Switch and Safety Interlock
  • Short Circuit when Laser Diode Current Turned OFF
  • Front Panel e-Stop Button Emergency Shut-Down
QCW PULSE MODE AND MODULATION
  • QCW Pulse Width Rise/Fall Time: 29 μs to CW, 10%-90%
  • Integrated QCW Pulse Generator, also Accepts External Trigger for QCW Pulses
  • Pulse Time Base Accuracy: ± 1.0%
  • MODULATION Input (BNC): Digital (TTL) or Analog
  • MODULATION BNC Input Impedance: 10K ohm
  • MODULATION Input Voltage Range: 0 ~ 4 Volts (4V = Max Current)
COMPUTER INTERFACE USB Optional: $95.00 (Option SVC-USB)
  • RS232 Standard, LabView Drivers Included
  • USB Optional: $95.00 (Option SVC-USB)
DIMENSIONS AND POWER REQUIREMENT
  • Standard Rack Width: 19 inches
  • Universal 98V ~230VAC, 50/60 Hz
  • 2U Rack Height Includes Front Panel Mounting Brackets

Product Overview:

The LDI-344 series high power drivers for laser diodes offer up to 125 amps of bias current at a maximum voltage of 12V. They offer an RS232 or a USB digital interface with control software and LabView drivers. They have integrated laser diode protection features such as current limit, soft start current ramp and power surge filters to make sure that your laser diodes are protected at all times. Additionally, these units offer CW, modulated, and Quasi-CW (QCW) slow pulsed modes and have an integrated function generator. Pulse width's as narrow as 29 microseconds are achievable. They are offered in a rack-mount 19 inch width chassis and have a front panel with adjustment knobs for fast, simple set-up.

Protection Features Specifically Designed for High Power Laser Diodes:
These current sources feature multiple levels of built-in laser diode protection which have been optimized for high power bars and arrays. One of the unique features is a user programmable soft-start ramp of the bias current to the device under test. The factory sets the ramp time to 300 milliseconds as a default, but the user can adjust this time period from 1 millisecond up to 10's of seconds. This current ramp up and down function is designed to protect the laser from thermal shock during power up and down sequences. In addition to this soft-start ramp, these drivers offer features such as current limit, a brown-out and black-out power surge clamp, AC line filters and a fast response to shunt the current in the event of an open circuit. These drivers utilize high current rear panel connector and there are multiple cabling options available to ensure reliable connection to your device under test.

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