Laser diodes are easily burned out
When properly operated laser diodes do not suddenly stop operation but gradually reduce their output power instead. In contrast to life testing, burn in is applied to all lasers during their manufacturing process to identify and remove defective devices that would suffer from infant mortality. Is it getting old and tired? Voltage is good, lens is clean, I let it all rest last night. Being the facet the weakest link for power surges, it is important to improve its.
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