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Hi
I try to drive a laser diode, ML520G72 (Mitsubishi) with an iC-HG integrated circuit
driver, setting the current at about 280mA. however i failed to see any light out of it.
when i soldered the laser diode i was grounded and connected the pins very fast. i
could not figure out what really...
Thank you very much for the info.
however, all the pins are connected to a IC driver as instructed but failed to see any light coming out of it.
is there anyway one can check whether the laser is damaged?
Hi
Got a laser diode ML520G72 with 3 pins and wanna connect it two universal IC
driver with a cathode and an anode output. the diode will be driven in pulsed mode.
how should it be connected? where should the can pin connected?
Thank you
Some laser diodes can work in both CW and pulsed mode efficiently.
I have noticed that the peak power is higher in pulsed mode than in CW mode for some lasers
Lets say there is a 1W 445nm blue laser diode in CW.
If i want to pulse it to 25ns, can it give stable 1W peak power in 25ns?
Hi all,
a Darlington pair with two 2N2222 transistors were used to drive a laser diode working at 1.2A, however, there is about 100ns delay in the optical output as well as two or three times the pulse broadening wrt to the electrical signal. delay can be tolerated but not the optical pulse...
thanks Keith
i found two two items: a Mosfet http://www.vishay.com/docs/70778/70778.pdf and http://www.vishay.com/docs/70657/70657.pdf
and BJT http://www1.elfa.se/data1/wwwroot/assets/datasheets/avDSI_HF-Transistor-BLY87a_EN.pdf , that look fast and current seems to be alright.
which one...
thanks for your answer i appreciate that.
i need a source to generate a 25 - 35ns pulse to drive a laser diode.
true it doesnt have to have that picosecond rise time.
how can one generate a single pulse with tektronix 284 pulse generator?
is there any other alternative for generating single pulse in nanosecond?
thanks
thanks Keith
as it is used for just a single shot short pulse. i was just wondering if it would work and hope to give it a try. laser pointer seems to work at 400mA, and for such a short pulse it should be ok run with 1A current.
what model of MOSFET would you recommend for that?
:razz:hi
need a driver circuit for a 100 mW red laser diode (laser pointer) to produce a single 25ns pulse. the repetition doesnt have to be high.
your suggestions would be very much appreciated.
thank you in advance
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