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Laser Diode Pinout. 4 pins??!! Answered

Hi, I got a DVD Player at an auction, in fully working condition, for $10. So, since I already had one, I decided to remove the insides, and extract the laser diode within. I did so, expecting to have just a normal 50-200mw 3-pin red diode. Instead, I have a 4-pin diode, of unknown wavelength, color, and power. Would anyone happen to have a pinout for it? The pins are arranged as below in the picture.

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http://photonicsguy.ca/projects/405nmlaser has a pinout. It also includes the driver circuit plans.

http://laserpointerforums.com/attachments/f38/23164d1252150941-what-technical-specs-ir-diodes-phr-wavelenght-current-voltage-power-phr-redir1.jpg may be the same