A laser system and method for self-injection locking. The system includes a laser having a laser output at a frequency nullo. An optical port provides a portion of the laser output at the port and a modulator, coupled to the port, is driven by a RF signal at a frequency nullm generates two sidebands at nullonullnullm. A filter passes one of the two sidebands; and an optical path couples an output of the filter to the laser for injection locking.