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4400-80-12 LaserSource, 80A/12V/960W, Bus Bar

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4400-80-12 LaserSource, 80A/12V/960W, Bus Bar Click here for larger image(s)

The 4400-80-12 LaserSource provides up to 80A of current at up to 12V compliance, with excellent noise and accuracy specs. The 4400-80-12 is an excellent choice for applications that demand high currents, such as bar lasers. It supports both CW and Quasi-CW (QCW) mode.

Pilot Laser
In addition to the primary laser output, the 4400 includes control of a secondary pilot (or pointing) laser that is often integrated into high power laser modules.

Simple User Interface
The user interface is remarkably simple… so easy to use, you’ll have it up and running in no time. Unlike other instruments which rely on 7-segment LED displays and a confusing array of indicators and buttons, the 4400 instead presents information on a high contrast VFD display in an easy-to-read format., and displays current, voltage, and photodiode current simultaneously… no need to toggle though the readings as you would on most instruments. Settings and error messages are in clear English, not cryptic codes and flashing status lights.

Quasi-CW (QCW) Mode
The 4400 includes QCW mode, as many applications require the low duty cycle, high current pulses that QCW offers to manage thermal loading on the device.

  • 80A / 12V range
  • Both CW and QCW operation
  • 5mA resolution
  • USB and RS-232 interfaces

Standard Computer Interfaces
The 4400 includes both USB and RS232 computer interfaces, allowing for quick and easy connection to a PC for remote operation. In addition, the LaserSource’s command set is compatible with ILX and Newport controllers, allowing you to leverage any existing software you may have already developed.
                                    USB & RS232 Connectors.gif

Ground Loops Eliminated
Like all LaserSources, the 4400 includes isolated inputs and outputs. In technical terms, this means that every input and output signal is electrically isolated, so that offset voltages, ground connections, and AC noise will not “bleed” into other parts of the electronics. Even the photodiode input is fully isolated from the laser output, ensuring full isolation of the laser output. In practical terms, this means it’s impossible to create a ground loop through the LaserSource, a common problem in laboratory setups where several different instruments are used in the same test. No other driver on the market has this capability.

Analog Modulation
The 4400 supports analog modulation via a front panel BNC for arbitrary control of the current output using an external function generator or other voltage source.



CW Mode Specifications

    Range (A)

0 – 80

    Resolution (A)


    Accuracy (±[% set+A])

0.05% + 0.04

    Stability (ppm, time)

< 10, 1 hour

    Temperature Coeff (ppm/°C)


    Noise/Ripple (mA rms, low BW)

< 40

    Transients (mA)

< 160

    Compliance Voltage (V)


    Range (μA)

25 – 20000

    Resolution (μA)


    Accuracy (±[% set+μA])

0.05% + 2

    Stability (ppm, time)

< 200, 24 hours

    Temperature Coeff (ppm/°C)

< 200

    PD Bias (V)

0 to -5V, software programmable

    Range (V)

0 – 12

    Resolution (V)


    Accuracy (±[% set+V])

0.05% + 0.005

    Stability (ppm, time)

< 50, 1 Hour

    Temperature Coeff (ppm/°C)

< 100 

    Modulation Input Range

0 – 10V, 10kΩ

    Modulation Bandwidth (kHz)



QCW Mode Specifications

    Range (A)

6.00 – 80

    Resolution (A)


    Setpoint Accuracy (±[% set+A])

0.1% + 0.080

    Measurement Accuracy (±[% reading+A])

2.5% + 0.025

    Compliance Voltage (V)


    Resolution (V)


    Measurement Accuracy (±[% reading+V])

2% + 0.04

    Resolution (μA)


    Measurement Accuracy (±[% reading+μA])

2% + 100

    Range (ms)

0.1 – 600

    Resolution (ms)


    Accuracy (ms)


    Range (Hz)

1 – 1000

    Resolution (Hz)


    Accuracy (Hz)


    Range (%)

0.1 – 90

    Resolution (%)


    Rise/Fall Times (µs)

< 50 / < 30

    Overshoot (%)

< 7

    Zero Current (A)

< 0.160



    Current Limit Accuracy (±[% set+A])

1% + 0.4

    Voltage Limit Accuracy (±[% set+V])

1% + 0.2



    Display Type

4x20 VFD

    Laser Connector

Bus Bar

    Computer Interface

USB 2.0 Full Speed (Type B),
RS-232 (DB-9, male)

    Input Power

90 - 240V, 50 / 60Hz

    Size (H x W x D) [inches (mm)]

3.5 (90) x 12 (305) x 14 (356)

    Weight (lbs [kg])

13 [5.9]

    Operating Temperature

+10°C to +40°C

    Storage Temperature

-20°C to +60°C