Techniques for performing a safety test of a laser diode ophthalmic surgical apparatus

An apparatus for performing a safety test of a laser diode of an ophthalmic surgical apparatus, comprising:

• a temperature sensor configured to measure an operating temperature of the ophthalmic surgical apparatus;
• a power module comprising circuitry, the power module configured to:
• output a plurality of different current levels;
• apply the plurality of different current levels to an input of the laser diode;
• and
• determine a plurality of different output power levels associated with the laser diode based on the plurality of different current levels applied to the input of the laser diode, wherein the plurality of different output power levels include a different output power for each of the different current levels of the plurality of different current levels;
• one or more processors configured to:
• obtain the measured operating temperature of the ophthalmic surgical apparatus from the temperature sensor;
• obtain, from the power module, an indication of the plurality of different output power levels and the plurality of different current levels;
• determine a measured slope efficiency of the laser diode based on the plurality of different current levels and the plurality of different output power levels;
• determine an expected slope efficiency of the laser diode based on the measured operating temperature of the ophthalmic surgical apparatus and one or more calibration parameters;
• determine a result of the safety test of the laser diode based on the measured slope efficiency of the laser diode and the expected slope efficiency for the laser diode;
• and
• output an electrical signal indicating result of the safety test of the laser diode.