Pulsed laser driver

Nasser Kardan

Prodigy 50 points

I am looking for a chip with the following spec for pulsed laser drive:

- Max current 2A
- Min pulse width 1 or 1.5nsec
- Max repetition Rate 20MHz
- VCC= 5V Max =12V

MOSFETs could be included or not. Does anybody could help.

Thanks

over 14 years ago

0 Alex Davidson over 14 years ago

TI__Expert 8915 points

The laser drivers in our portfolio are for gigabit communication links and can not provide this much current.

Providing 2A of current in 1ns is challenging. This will most likely need to be a descrete design. I have attached a paper showing a pulsed laser driver that can provide 2.5A of current but the risetime was around 17ns. The risetime was 8ns for 1A.

I aso found a company called Avtech with pulsed laser drivers with sub-nanosecond rise times. Maybe you can check into this.

http://www.avtechpulse.com/laser/avo-9f1/

Regards,

Alex.

ieee_laser_driver.pdf

0 Nasser Kardan over 14 years ago in reply to Alex Davidson

Prodigy 50 points

Thanks the information you provided is very helpful.

Regards,

Nasser

0 Scott Jenney over 9 years ago

Prodigy 110 points

I am also looking for a higher current laser driver. I will be diving a 30ns 400ma pulse every 30us.
In addition, my laser diode will require a continuous 50ma bias.
Did you find a driver that would work for your specs, and if so, can you share it with me?

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Pulsed laser driver