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High Power Laser Diode Driver: Current Range up to 25 Amps, Compliance Voltage up to 64 Volts

  • laser-diode-driver-ldi-824-7
  • Laser Diode Driver Infographic Diagram
  • LDI-532 laser diode driver rear panel
  • LDI-532 laser diode driver devices panel
  • laser-diode-driver-tech-support-infographic-8
  • Laser Diode Driver Pin Diagram
  • High Power Laser Bar Driver Backpanel
  • Software Screen Capture Driver for Laser Diodes Pulsed and CW

sku / item#: LDI-824
ships: Request a Quote for Current Ship Date

Key Features
  • Current up to 25 Amps; Compliance Voltage up to 64 Volts (CW)
  • Optimized for High Compliance Voltage Pump Laser Diodes from nLight, Lumics, II-VI, Lumentum, Coherent/DILAS
  • CW Mode and Integrated Quasi-CW Pulse Generator; Pulse Widths from 30 µs to CW
  • User Configurable Soft-Start Ramp to Laser Diode Bias Set-Point
  • Open Circuit Detection and Fast Shut-Down with Analog Control Loop
  • RS232 Interface with LabVIEW Drivers; Optional USB Interface available

Price and Delivery Quote

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Select Cables and Accessories for this Controller

This cable is also available terminated on the
controller end with a 15-pin d-sub connector (male) and
15-pin d-sub connector (female) on the device-end (kab-231).

This cable is also available terminated on the
controller end with a 15-pin d-sub connector and
unterminated on the device-end (kab-39).

This cable is also available terminated on the controller
end with a 2W2 d-sub connector (male) and a
2W2 d-sub connector (female) on the device end (kab-297).

This cable is also available terminated on the controller
end with a 2W2 d-sub connector (male) and unterminated
on the device-end (kab-286).

Technical Questions for this Product


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Why do Scientists & Engineers Choose Laser Lab Source?

PRICE $4405.00
  • Compliance Voltage Range: 0.12 - 64.00 Volts
  • Output Current Range: 0.00 - 25.00 Amps
  • Current Noise & Ripple (rms): < ± 0.5% ( of full scale current )
  • Current Setpoint Resolution: 8 mA
  • Current Setpoint Accuracy: ± 0.5%
  • Current Limit Setpoint Accuracy: ± 2%
  • Photodiode Current Measurement Accuracy: ± 0.5%
  • Photodiode Current Measurement Range: 0.00 - 4,000 μA
  • Soft-Start Current Ramp; Factory Default Set to 300 Milliseconds; User Adjustable
  • User Programmable Current Limit
  • Fast Open Circuit Detection and Shut-Down
  • ESD and Power Surge Clamp, AC Line Filter
  • Reverse Voltage Transient Clamp
  • 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 Width Range: 30 μs to CW, 10%-90%
  • Integrated QCW Pulse Generator, also Accepts External Trigger (Rising Edge) for QCW Pulses
  • QCW Pulse Time Base Accuracy: ± 1.0%
  • Modulation Input: BNC, Digital (TTL) or Analog, 10kΩ Impedance
  • ---------------------------------------------------------------------------------------------
  • External Modulation Input Voltage Range: 0 ~ 4 Volts (= 0 to Full Scale Current)
  • Analog Modulation Bandwidth: 1 Hz – 20 kHz
auxiliary functions and connections
  • Optional Fiber Sensor Input
  • Output for Laser On External Indicator
  • Pilot Laser Output
  • External Temperature Sensor Input
  • Adjustable Auxiliary Output for External Cooling Fan
User INTERFACE and Connectors
  • Front Panel: Alphanumeric LCD with Key Pad
  • RS232 Standard
  • LabView Drivers Included
  • Laser Diode Connector: SubD-2W2, Female
  • Auxiliary Functions Connector: SubD-15, Female
  • RS232 Connector: SubD-9, Female
  • Safety Interlock: Jack Connector, Stereo 3.5mm
  • Power Input: Universal 100V ~ 240 VAC, 50/60 Hz
  • Dimensions: 89 mm (H) x 482 mm (W) x 266 mm (L)
  • Chassis Height: 2U (Standard Rack-Mount Units)
Recommended Accessories
  • kab-39 Unterminated Connecting Cable -or-
    kab-231 Terminated Connecting Cable
  • kab-286 Unterminated Power Cable -or-
    kab-297 Terminated Power Cable
  • acc-417 USB-RS232 Converter

Product Overview:

High Current and High Compliance Voltage Laser Diode Driver

The high power LDI-824 drivers offer up to 1.7 killowatts of power for laser diodes connected in series, laser diode stacks and multi-emitter devices. The drivers feature multiple levels of built-in laser diode protection which have been optimized for multi-single chip laser diodes. They are used to safely power the newest generation of pump lasers from companies such as nLight, Lumics, DILAS, and II-IV. These units offer CW, modulated and Quasi-CW/ pulsed modes and have an integrated function generator. Pulse widths as narrow as 30 microseconds are achievable.

Protection Features for High Voltage Laser Diodes; Protection for your 808 / 915 / 940 / 976nm High Power Pump Laser

These drivers include all of the industry standard laser diode protection features such as current limit, soft-start current ramp and power surge clamps to make sure that your laser diode is protected at all times. Additionally, they offer additional protection circuits designed specifically for high voltage lasers. The user has the ability to adjust the soft-soft current ramp time in order to lengthen or shorten the current ramp time based on the application. In CW applications, the user can lengthen the current rise time to reduce the possibility of thermal shock damaging the multi-single emitters. In QCW applications, the user can shorten the rise time to optimize for clean pulses. The LDI-824 is pre-set to a 300 millisecond soft-start current ramp which is optimal for general use conditions. These units also include a fast all-analog feedback loop to sense open circuit conditions and automatically short the current output to the laser diode when needed. This helps prevent damage which can be caused by over-voltage or over-current response from DC power supplies when an intermittent contact in the current path occurs.

Laser Driver User Features

The LDI-824 features front-panel controls for fast and simple setup, and includes an RS232 interface with LabView drivers. An optional USB digital interface is available. Inquire for details on ordering the USB control option. The driver utilizes a high current SubDW2 rear panel connector and there are multiple cabling options available to ensure reliable connection to your device under test. The model 532 is offered in a rack-mount 19 inch chassis. It also includes "flip-up" feet on the bottom of the chassis for use on a laboratory bench or optical table.

Why do Scientists & Engineers Choose Laser Lab Source?

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