I want to buy a whole bunch of cheap laser diodes/pointers for use with signal modulation.
On ebay i see laser pointers for $1 each…
Some laser pointers can be modulated, some can not. It depends on their power supply. Some of the really cheap lasers just have a resistor as their “power supply”. These are ideal.
Does anyone know if there is a delay when you turn a laser on after turning it off? A lot of designs i see modulate the laser between low power, and high power, instead of just on and off. (for digital stuff)
Laser diodes can probably be ordered a lot cheaper, but they need lenses to make collimated beams (i think that means thin and straight etc
So if anyone has experience with this, please shed some light.
Well, can’t help with your question, however for anyone looking for cool little toys, I just spent $30 on a bunch of laser stuff from vistawholesale.
They have straight 650nm laser pointers for $0.90/ea, which are supposedly much brighter than the 675nm.
I need to make some small fiber visual fault indicator/pathing gadgets for work, so picked a couple of these to use for the laser and hold the electronics. Now, I just need an electric skillet from Targ-e.
I need to make some small fiber visual fault indicator/pathing gadgets for work, so picked a couple of these to use for the laser and hold the electronics. Now, I just need an electric skillet from Targ-e.
LopeD:
Hey dude… when you get your pointers, please open one of them up and check out the power supply and tell me what you see
would be appreciated.
peace
Will do, give me a couple of days. BTW, they ended up not being strong enough for me. They are labeled as <1ms, and are definately weak. We’ve got a Noyes 1mw fiber tester, and it will runs a couple of km!
Looking at a place that sells real 1mw dioces for like $20.
Ah saved you the effort and looking at the page the 3mw is only $17.50
