Re: Anybody seen a spice model for a laser diode?

On Jan 26, 12:35 pm, Michael <nleah...@xxxxxxxxx> wrote:
On Jan 26, 9:47 am, Winfield <winfieldh...@xxxxxxxxx> wrote:

Michael wrote:
Hi there - I was thinking about trying to design a laser driver over
the weekend. Unfortunately, I can't seem to find a spice model for a
laser diode, putting a bit of a squabash on that plan.

Anybody know where I can find one? Ideally I'd find one for a very
normal ~5mw red laser diode - like those you'd find in a cheap laser
pointer.

I created a spice model for a purple laser diode,
complete with it's optical sensor.

Hi Winfield - out of curiosity, how would a purple laser diode differ
from a red laser diode? (besides the outputted color :0 )

MUCH higher forward voltage - the band-gap voltage for
short-wavelength photons is much higher, because each
photon has much more energy. Also, every type of laser
diode will have its own plot - the laser-light output
is very nonlinear with current, and you want the spice
model to properly show that effect. Also, whatever you
get, I wouldn't trust the model until I had verified it
on the bench.
.

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