DEI lab and OEM laser diode drivers and current sources for high power and precision Quasi-CW (QCW) and Continuous Wave (CW) operation for applications in R&D, materials processing, and characterization and testing of laser diodes. Founded in 1970, Quantel is one of the world's leading specialists in laser technology for scientific (laboratories and universities), industrial (material processing, process analytics, marking) and medical (ophthalmology) markets. A laser diode (or diode laser) is a semiconductor laser that produces coherent light when current is applied. Diode lasers are made of p-doped and n-doped semiconductor material with an active region in between. The latest laser diode drivers LDD-1124, LDD-1121 and LDD-1125 are members of the digital LDD-Family and feature a microcontroller and a FPGA. Our LDDs are ideally complemented with our TEC-Family precision Peltier temperature controllers. The Model 781 is a single channel, non-isolated compact QCW laser diode driver. The high efficiency design will drive diodes up to 2V with 3V input. Current amplitude.
Laser Diode Drivers
* Specifications measured with a fast recovery diode instead of a laser diode. Technical data is preliminary and subject to change without further notice. ** See manual for details.
DEI offers a variety of laser diode drivers designed for high power and precision applications for pulsed, Quasi-CW (QCW) and Continuous Wave (CW) operation.
High compliance voltages allow for both single diode and diode array use as well as non-laser applications requiring a current source.
These instruments are perfect for research & development, characterization, and testing of laser diodes. We offer instruments, standard modules and OEM modules tailored through our Lab to Launch program.
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Typical Applications
Our Laser Diode Drivers are sorted by Compliance Voltage by default but you can sort any column by clicking the column header or search by part number or parameter in the search field on the right.
Please note: The specifications listed below represent the highest performance point. Consult the datasheet and/or operating manual to see full safe operating area (SOA) information.
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Home > Nanosecond Pulsed Laser Diode Drivers > Analog Modules > 786
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High Power Laser Diode Driver
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Product Overview:Seed Laser Diode Drivers
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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