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High Power Laser Diode Driver; 15 Amp Current Source with Compliance Voltage up to 24 Volts

  • Model LDI-823 Laser Diode Driver
  • High Power Laser Diode Devices
  • High Power Laser Diode Driver Model HV
  • LDI-823 High Power Laser Diode Driver Pinout
  • OEM High Power Laser Diode Connector
  • LDC-165HV High Power Laser Diode Control Software

sku / item#: LDI-823
ships: Request a Quote for Current Ship Date

Key Features
  • Up to 15 Amps, 24 Volts (CW)
  • Designed for Multi-Chip and Series Connected Laser Diodes Requiring High Voltage
  • CW and Quasi-CW Modes
  • QCW Pulse Widths 25 μs to CW (<5 μs on request)
  • RS232 Interface with LabVIEW Drivers; USB Control Available as an Option
  • Previous Part Number: LDC-823

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).

Technical Questions for this Product


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Why do Scientists & Engineers Choose Laser Lab Source?

PRICE $2305.00
  • Compliance Voltage Range: 0.12 - 24.00 Volts
  • Output Current Range: 0.00 - 15.00 Amps
  • Current Noise & Ripple (rms): < 1% of Full Scale Current
  • Current Setpoint Resolution: 4 mA
  • Current Setpoint Accuracy: ± 0.5%
  • Current Stability (4 hours): ≤ 100 ppm
  • Current Limit Setpoint Accuracy: ± 2%
  • Photodiode Current Measurement Accuracy: ± 0.5%
  • Photodiode Current Measurement Range: 0.00 - 700 μA
  • 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
  • Pulse Rise / Fall Time: < 25μs ( <5μs on request), 10%-90%
  • Integrated QCW Pulse Function Generator or External Trigger
  • MODULATION Input (BNC): Digital (TTL) or Analog
  • MODULATION BNC Input Impedance: 10K ohm
  • Integrated QCW Pulse Generator, Also Accepts External Trigger for QCW Pulses
  • ---------------------------------------------------------------------------------------------
  • MODULATION Input Voltage Range: 0 ~ 4 Volts (4V = Max Current)
  • Analog Modulation Bandwidth: 1 Hz – 20 kHz
auxiliary functions
  • Temperature Sensor Input: 10kΩ NTC Thermistor
  • Photodiode Cathode (Analog Connected to Gnd)
  • Pilot Laser Anode, vs. Ground: (4 - 5V, 150 mA)
  • Modulation Input
  • Electronic Safety Interlock Connection
  • RS232 Connections
  • External Fan Control Circuit, 2 - 24V, 800mA (max)
  • RS232 Standard
  • LabView Drivers Included
  • Laser Connector: DB-7W2, Female
  • Support and Peltier Connector: SubD-15, Female
  • Main Power Connector: MOLEX Housing 10013036; Terminal 8701031
  • Power Input: Universal 90V ~ 230 VAC, 50/60 Hz
  • Dimensions: 85 mm (H) x 105 mm (W) x 164 mm (L)
Recommended Accessories
  • kab-39 Unterminated Connecting Cable -or-
    kab-231 Terminated Connecting Cable

Product Overview:

15 Amp High Voltage Driver Overview

The LDI-823 high power laser diode driver offers a maximum output of up to 330 Watts and can operate in constant current CW or pulsed Quasi-CW mode. These units feature a high efficiency design with high reliability components to offer long-life operation, and are integrated into industrial lasers systems used in harsh environments as well as laboratory R&D applications.

Laser Driver Safety Features

These drivers feature a user programmable soft-start ramp of the laser diode bias current. The factory sets the ramp time to 300 milliseconds as the default. This current ramp-up and ramp-down function is designed to protect the laser from thermal shock during power-up and power-down sequences. The LDI-823 has AC line filters and a fast response to shunt the current in the event of an open-circuit. Also included is the ability to control an external cooling fan: a temperature sensor input is available on the back panel, and the external fan control is capable of driving up to 800 mA at 24 V.

CW and Quasi-CW Modes of Operation

In addition to CW (continuous wave) mode of operation, the LDI-823 offers flexible modulation capabilities and an integrated QCW mode. The controller has an internal function generator which can be used to set the modulation signal or the quasi-CW pulses with a time base accuracy of 1.0%. In QCW mode, the user can also set the pulses from a remote TTL signal source. The typical rise time of the QCW mode for these drivers is 25 µs. Faster rise times are available on request. Rise times less than 5 µs are achievable if the load and cabling are optimized for fast pulses.

Laser Driver Control Interface

The LDC-823 features an RS232 interface and includes LabView drivers. An optional USB digital interface is available; inquire for details on ordering the USB control option.

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