Request schematic check for the AD9665. Pulsing 30ns 800ma pulses that ride on a 50ma constant current.
Based on your schematic, you do have a problem with pin32. This should have been connected to VDD. This is all I see so far. As to the layout, please make sure to put the laser diode as close as possible to the LD1 and LD2 pins of the IC in order to have an accurate result.
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