| abstract |
A laser oscillator enabling estimation of the lifetime of the pump light source by a simple configuration, provided with a pump light source, a power source supplying current to the pump light source, a laser crystal outputting laser light by the pump light emitted from the pump light source, a power sensor receiving laser light generated from the laser crystal and outputting a signal corresponding to the intensity of the laser light, a memory storing the operating time of the laser oscillator, and a processor judging if the signal output by the power sensor satisfies a predetermined condition and, if satisfying the predetermined condition, uses the value of the current supplied by the power source to the pump light source and the operating time stored in the memory to estimate the lifetime of the pump light source. |