Mike Hord gmail.com> writes: > inside a very tight package, I don't think rapidly moving anything from a > heat source to the diode lead is an option. Could you not simply control the laser current down to a level where no lasing occurs and measure the voltage drop on the diode instead ? That would be even more interesting than lead temperature I think. Peter P. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist