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20 Amp, 30 Volt High Compliance Voltage Laser Diode Driver

  • LDC-250HV 20A, 30V, Diode Laser Driver Front Panel
  • LDC-250HV 20A, 30V, Diode Laser Driver Backpanel
  • LDC-250HV 20A, 30V, Diode Laser Driver Pinout
  • LDC-250HV 20A, 30V, Diode Laser Packages
  • LDC-250HV 20A, 30V, Diode Laser Control Software

sku / item#: RLS/LDC-250HV
ships: 3 weeks

Key Features
  • High Compliance Voltage for Multi-Chip Emitters and Laser Diodes Connected in Series
  • Compliance Voltage Range up to 30 Volts at 20 Amps
  • User Configurable Soft-Start Current Ramp and Multiple Layers of Laser Diode Protection
  • CW and QCW Pulsed Modes of Operation
  • QCW Pulse Width Range < 25 μs to CW
  • RS232 Interface with LabVIEW Drivers
  • USB Control Available as an Option
  • Offered by OsTech, a Laser Lab Source Marketplace Seller
  • Sold & Supported in North America by: LaserDiodeControl.com, part of the
    Laser Lab Source Marketplace Group

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Why do Scientists & Engineers Choose Laser Lab Source?

PRICE $3495.00
  • Output Current Range: 0.00 - 20.00 Amps
  • Compliance Voltage Range: 0.00 - 30.00 Volts
  • Current Noise & Ripple (rms): <± 0.5% of Full Scale Current
  • Current Setpoint Resolution: 5 mA
  • Current Setpoint Accuracy: ± 0.5%
  • Current Stability (4 hours): ≤ 200 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
  • Short Circuit when Laser Diode Current Turned OFF
  • ESD and Power Surge Clamp
  • Reverse Voltage Transient Clamp
  • AC Line Filter
  • Rear Panel Keylock Switch and Safety Interlock
  • Front Panel e-Stop Button Emergency Shut-Down
  • Pulse Width Range < 25μs to CW, 10%-90% (< 10μs on request)
  • Integrated Function Generator
  • Pulse Time Base Accuracy: ± 1.0% QCW Mode Trigger: Internal (Integrated) Function Generator or External Trigger
  • QCW Mode Trigger: Internal (Integrated) Function Generator or External Trigger
  • MODULATION Input: Digital (TTL) or Analog
  • MODULATION Input Voltage Range: 0 ~ 4 Volts (4V = Max Current)
  • MODULATION CONNECTOR: BNC, Rear Panel, 10 kOhm Input Impedance
  • Front Panel Alphanumeric LCD with Key Pad Buttons
  • RS232 Standard, LabVIEW Drivers Included
  • USB Optional: $95.00 (Option SVC-USB)
  • Input Power: Universal 100VAC ~ 230 VAC, 50/60 Hz
  • Dimensions: 200mm (Width) x 175mm (Height) x 270mm (Depth)
  • Weight: ~ 10 kg
  • Laser Bias Current Output Connector: D-Sub 2W2 Style
  • Control Signals Connector: D-Sub, 15 Pin Female

Product Overview:

LDC-250HV High Power Laser Driver Overview

The LDC-250HV driver offers 30 Volts compliance voltage at 20 Amps for laser diodes connected in series, laser diode stacks and multi-emitter devices. On request, the current and voltage can be configured to match any customer specified range with a total of 600 Watts of output power to the laser. The LDC-250HV was designed with features to protect expensive multi-emitter pumps, and are used to safely bias 8XX through 9XXnm pumps with output power levels from 20 Watts to 300 Watts from companies such as Lumentum and II-VI laser.

Laser Diode Protection Features

To ensure that the series connected array of diode lasers is not damaged or destroyed, the LDC-250HV offers voltage transient protection and voltage clamping circuitry in addition to a user-set current limit. In addition to the current and TEC limits, there is an interlock safety connection as well as a front panel Emergency-Stop kill switch to ensure safe operation of the laser.

The LDC-250HV offers the industries only user-set slow-start current ramp to the bias set point. This allows the user to extend the ramp time out to 10’s of seconds to prevent the possibility of thermal shock and prevent over driving the module during the start up sequence. These units ship with a default 300 milliseconds current ramp.

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 500 mA at 24 V.

CW- and Quasi-CW Modes of Operation

In addition to CW (continuous wave) mode of operation, the 250HV offers flexible modulation capabilities and an integrated QCW mode. The user can apply a TTL digital or analog modulation input through the rear panel BNC. 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.

User Interface and Cable Connectors:

Controller setup is fast and intuitive via the front panel LCD display and alphanumeric interface, with a simple to use menu structure and key pad.

The controller employs a high-current two-pin connector, type DSUB-2W2, for connection to the high-power laser diode module.

These systems come with standard an RS-232 interface. The included LabView driver GUI makes set-up and control of the system fast and simple. The controller can be ordered with a USB interface; contact us for more information.

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