As a laser diode approaches the end of its operational life, its imminent failure is signalled by an increase in the current being drawn from its drive circuitry. Typically, when the current draw reaches a value of 120% of its original operating value, the laser diode is considered to have reached its “Near End of Life” condition.
PM-NEOLD laser diode modules have an integral “Near End of Life Detection” facility which is set to respond when this condition has been reached.
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