System and method for frequency matching a resonance cavity to a light source

A system for frequency matching a resonant cavity, comprising:

• a resonant cavity having at least a first mirror and a second mirror defining a path along which light is reflected, one or both of the first mirror and the second mirror at least partially permitting light from the resonant cavity to pass therethrough, at least the second mirror being actuatable to vary the length of the path of the resonant cavity;
• a light intensity meter configured to monitor an intensity of the light exiting or reflecting from the resonant cavity via the at least one of the first mirror and the second mirror;
• a logic unit configured to determine an error correction from the intensity of the light monitored by the light intensity meter;
• and
• a mirror actuator system configured to actuate the second mirror, at least partially based on the error correction, towards a pose relative to the first mirror at which a frequency of the light is in resonance with the length of the path.