Pulsed and QCW Laser Diode Driver, 10 Amps

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sku / item#: 786
ships: 2 Weeks

Key Features
  • Output Current: 10 Amps QCW Mode
  • QCW Pulse Width: 1.0 to 10.0 ms
  • Compliance Voltage: 2.2V
  • Compact Size Only 0.8”X1.25”X0.2”

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  • Laser Diode Output Current: 0.125 to 10.0 A
  • Laser Diode Compliance Voltage: Up to 2.2 V
  • Input Power: 2.7 to 4.3 VDC
  • Quiescent Current: 4.0 to 12.0 mA
  • Trigger: 2.4 to 5.0 V
  • Truncation: 2.4 to 5.0 V
  • Repetition Rate: Single Shot to 10 Hz
  • Duty Cycle: Up to 10 %
  • Average Power: 2.0 W
  • Risetime: <200 Micro Sec
  • Laser Diode: Solder pads for anode and cathode
  • Size: 0.8"x1.25"x0.2"
  • Weight: 0.074 oz (2.1 grams)

Product Overview:

The Model 786 is a high current driver designed primarily for diode pumped passively Q-switched lasers. It is a single channel compact QCW laser diode driver designed to power direct coupled laser diodes. The input is via a 3.6V DC lithium battery or power supply. Current amplitude is adjustable by a potentiometer and solder pad connections are present to connect the laser diode. Output pulsewidth will follow the external trigger input and the pulse can be truncated by an external photodetector input, if present or a 2.4V to 5V logic level.

The Model 786 is preferentially designed for battery operated portable applications. As such, minimization of size, weight, power consumption and cost were the primary design drivers.

The internal battery resistance and the associated power wiring resistance can cause a significant voltage drop during the pulse and should be minimized. The laser voltage drop is less than 2V normally. The rest of the electronics requires more voltage. By capturing the higher battery voltage between shots and using it to operate the low current electronics, the battery life can be extended. It is also supplied for use as a bias source for an optional photo detector to respond to the Tₒ event.

The Model 786 is designed to operate from a single lithium ion primary or secondary cell 3V to 3.7V nominal output or two lithium ion primary cells nominal output 1.5V each.

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