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dragonizer 08-07-2013 04:11 PM

Multi Mode lasers
 
Hey guys, I want to ask a very noob question.

"How does multi-mode lasers pointers work?"

By multi-mode I mean, High power, Low power, Strobe, SOS, etc..

Also, I want to ask that:

How is the modes controlled? Through the driver or through the switch circuit?

Is all drivers and diodes compatible with multiple modes?

Thanks,
Dragonizer

Cyparagon 08-08-2013 03:28 AM

Re: Multi Mode lasers
 
Google PWM.

dragonizer 08-08-2013 03:59 PM

Re: Multi Mode lasers
 
Quote:

Originally Posted by Cyparagon (Post 1223440)
Google PWM.

PWM as in Pulse-Width Modulation? If so, I still don't get how these multiple modes work:cryyy:. Thanks for your response though.:thanks:

Trevor 08-08-2013 04:15 PM

Re: Multi Mode lasers
 
Using PWM, you can blink a laser (including blink patterns), set it to low or high power, etc.

For example, PWM for 50% power would be blinking the laser on and off VERY rapidly at a 50% duty cycle.

Trevor

dragonizer 08-08-2013 04:40 PM

Re: Multi Mode lasers
 
Quote:

Originally Posted by Trevor (Post 1223674)
Using PWM, you can blink a laser (including blink patterns), set it to low or high power, etc.

For example, PWM for 50% power would be blinking the laser on and off VERY rapidly at a 50% duty cycle.

Trevor

Now I get the LOW power and HIGH power part:yh:. :thanks:

But, I still want to ask:

Where is the PWM circuit situated? Near the switch or at the driver??

And, the high and low power is due to the duty cycle, how about the strobe/SOS mode? The strobe is just that the frequency is lower:thinking:?

Thanks

Trevor 08-08-2013 04:43 PM

Re: Multi Mode lasers
 
The modulation would be in the driver.

For the other modes, if the laser diode can be cycled on and off at 1kHz+, then cycling it at 10Hz or lower is no problem... ;)

Trevor

dragonizer 08-08-2013 04:49 PM

Re: Multi Mode lasers
 
Now I get it. Thank you very much.

+Rep

THANKS!!


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