How fast have you modulated a green (dpss) laser diode?

[milton]

I have learnt that regular cheap green DPSS laser diodes can't be modulated as fast their red or blue counterparts.

But how fast will they go? Have anyone tried pushing them to their limit - what did you find?

 

[NightExplorer96]

Hey milton!

All you need to do to kill a green diode(532nm) is just turn the pot up until it over-drives the current.

Or, you could mis-align the crystals if you consider that killing it as well

And did you mean mutilate instead of moduate?

 

[milton]

Hi!
I meant how fast it is possible to "blink" with them (modulate the signal... turning them on and off repeatedly).

The reason that I'm asking is that I have had fun building a very lo-fi laser projector with a red laser. I modulate the signal (switching the red laser on and off) up to 1 MHz without problem. Now I thought it would be fun to add a green laser, but I heard they are slow and can't be modulated very fast, so I wondered if anyone knows how fast they could be modulated (approximately... I don't expect an exact figure)

 

[NightExplorer96]

Oh alright I got you milton.

Well sadly I can't be much help on that, don't have a clue on how long it would take with that method

 

[Cyparagon]

I have had fun building a very lo-fi laser projector with a red laser. I modulate the signal (switching the red laser on and off) up to 1 MHz without problem.

Why would you need that kind of speed in a "lo-fi projector"? Are you talking about raster scanning? To your original question, it depends on the quality of the device, but 10-30kHz is a common rating among manufacturers.

 

[Bionic-Badger]

I bought some of those acousto-optic modulators (AOM), so I could technically modulate at Mhz speeds (fast for scanners, slow for basically anything else). For the power it takes and the decrease in output it's probably not worth using for that. It's in a box and probably will end up as a never-used project. :| Oh well.