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You can pulse it using an Arduino and a 2N2222.
it has been discussed in this Forum. Here is the link:
http://laserpointerforums.com/f67/how-drive-green-laser-using-arduino-70770.html
There are some easy schematics down the post.
Also you can program the Arduino to pulse at the rate you want.
I would be happy to help if you want.
The LM555 is a <$0.50 solution to Pulsing a LD without
the need to program a MCU.
Digi-Key - LM555CMFS-ND (Manufacturer - LM555CM)
It is a simple matter to add an inexpensive potentiometer
to get a variable pulse rate...
There is nothing wrong with going overboard to do a
simple job like pulsing a LD...
Jerry
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