Stalilization of injection-locked lasers using spatial mode interference

The use of tilt-locking (TL) for stabilizing an injection-locked laser was demonstrated. The tradeoff between the misalignment required to produce a suitable error signal and concomitant reduction in the injection-locking range was investigated. This technique was found to be robust and added negligible frequency noise to the injection-locked laser. The frequency stability of Non planar ring oscillator (NRPO) master laser was accurately transferred by the TL system to the injection-locked laser without complications of an radio frequency (RF) modulation/demodulation system.