[Laser] Driver circuits? ZD1954 10mW

[Kevin Forbes]

Hi folks, I am requesting a bit of help regarding finding a suitable circuit 
to drive a laser diode that I have recently come across purchased and would 
like to experiment with. I purchased it from Jaycar Electronics in 
Australia, it s a 10 mW ZD1954,655nm TO18 supplied with a collimating lense. 
I did read somewhere that the supplied lense is not much chop, anyone 
support this? Should I or is it O.K. to make a driver circuit like the 
following, a variable voltage regulator at 2.3 volts in line with another 
voltage regulator wired up as a current limiter for 30-45 mA operating, 60 
mA MAX? Oh, and bye the way, I'd better ask how to utilise the built in 
photo diode properly while I'm at it.
Cheers folks and thanks in advance. Kevin Forbes, VK3UKF.

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