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20 Amp Laser Diode Driver for High Power Pump Lasers

  • laser diode driver model LDI from Ostech
  • 980nm pump laser driver pinout
  • 976nm / 980nm pump laser diode driver connections
  • Laser Diode Driver for 980nm Pumps Software

$2735.00  
sku / item#: LDI-187
ships: 14 to 18 days

Key Features
  • Simple to Operate Front Panel or RS232/USB Interface with Labview GUI
  • Output 0 ~ 20 Amps, 6 Volt Compliance Range
  • Multiple Integrated Protection Features Optimized for High Power Pump Laser Diodes
  • RS-232 Interface, Includes LabVIEW Drivers; USB Interface Optional, Inquire
  • CW and QCW Modes of Operation
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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).

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Why do Scientists & Engineers Choose Laser Lab Source?

MODEL LDI-187
PRICE $2735.00
LASER DIODE CURRENT OUTPUT
  • Current Output Range: 0.00 - 20.00 Amps
  • Compliance Voltage Range: 0.00 - 6.00 Volts
  • Current Noise & Ripple (rms): < ± 0.5% of Full Scale Current
  • Current Setpoint Resolution: 5 mA
  • Current Stability (4 hours): ≤ 300 ppm
  • Current Limit Setpoint Accuracy: ± 2%
INTEGRATED LASER DIODE PROTECTION FEATURES
  • Programmable Soft-Start Current Ramp to Set Point (300ms Default)
  • Independent Pilot Laser Output (5V, 150mA max)
  • User-Programmable Current Limit
  • Open Circuit Detection
  • 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
QCW AND MODULATION
  • Minimum QCW Rise and Fall Time: 2μs (< 1μs on request)
  • QCW Pulse Width: User Adjustable 2μs to CW, 10%-90% (< 1μs on request)
  • External Modulation Input Voltage Range: 0 ~ 4 Volts
  • Modulation Bandwidth: 25 kHz
  • Modulation Input: BNC, Digital (TTL) or Analog, 10kΩ Impedance
  • QCW Trigger: Internal Pulse Generator or External
  • ---------------------------------------------------------------------------------------------
  • Modulation Input Voltage Range: 0 ~ 4 Volts (4V = Max Current)
  • Analog Modulation Bandwidth: 1 Hz – 20 kHz
auxiliary functions
  • Laser-On External LED Indicator: 5mA Output
  • Pilot Laser Anode, vs. GND
  • Temperature Sensor Input: 10kΩ NTC Thermistor
  • External Fan Control Circuit, 1 - 24V, 300mA (max)
  • Photodiode Input, Measurement Range: 0.00 - 700 μA
  • Photodiode Current Measurement Accuracy: ± 0.5%
USER INTERFACE and connectors
  • Front Panel: Alphanumeric LCD with Key Pad
  • RS232 Standard
  • USB Optional: $95.00 (Option SVC-USB)
  • LabView Drivers Included
  • Laser and Peltier Connector: SubD-15, Female
  • RS-232 Connector: SubD-9, Female
  • Safety Interlock: Jack Connector, Stereo 3.5mm
DIMENSIONS AND POWER INPUT
  • Power Input: Universal 100V ~ 240 VAC, 50/60 Hz
  • Dimensions: 85mm (H) x 105mm (W) x 200mm (L)
Recommended Accessories
  • kab-39 Unterminated Connecting Cable -or-
    kab-231 Terminated Connecting Cable
  • acc-417 USB-RS232 Converter

Product Overview:

Precision 20 Amp Pump Laser Diode Driver

The LDI-187 series driver is an affordable precision current source which offers up to 20 amps and 6 volts of power to bias your laser diode. They have industry leading protection features to make sure that your high power device is not damaged by AC line power surges, over-current, reverse transients and multiple other potential sources of harm to the laser. This model includes an RS-232 digital interface with an option for a USB interface. In addition to the continuous wave (CW) DC current mode of operation, the LDI-187 also includes a Quasi-CW mode with a built-in function generator that can deliver pulses from 25 µs to CW. These drivers are designed with multi-stage filtering to deliver low noise, high stability current to the laser diode.

Designed to Safely Bias 808nm ~ 980nm Single Emitter Pump Laser Diodes

These laser diode drivers were designed specifically for fiber coupled and free-space pump laser diodes from companies such as LUMICS, Lumentum and II-VI. It has a fast feedback analog control loop which detects open circuit conditions and immediately shorts the drive current. The user can set the current soft-start ramp time period or can use the default factory setting of 300 milliseconds. The user programmable soft-start current ramp is designed to allow the user to optimize the ramp time to avoid thermal shock to the laser. Thermal shock can result from quickly ramping the drive current and the subsequent heat generation which occurs before the temperature of the device under test can be stabilized.

Includes Internal Function Generator for QCW

The internal function generator on the LDI-187 provides the user with the flexibility to run the laser in multiple modes such as "hard-pulse" or microsecond pulsing QCW mode. It has a BNC input on the rear panel which allows the user to apply an analog or digital modulation signal which can be used to dither the drive current. Also, sequencing software is available to allow the user to set a string of desired current set-points: the unit auto-sequences through a pre-set range of current points for the pre-set dwell times for each point.

Compatible heat sink options with interface cables are available for most fiber coupled laser package styles. Inquire for details.

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