Optical Injection Locking of a VCSEL in an OEO

Optical injection locking has been demonstrated to be effective as a means of stabilizing the wavelength of light emitted by a vertical-cavity surface-emitting laser (VCSEL) that is an active element in the frequency-control loop of an opto-electronic oscillator (OEO) designed to implement an atomic clock based on an electromagnetically-induced-transparency resonance. This particular optical-injection-locking scheme is expected to enable the development of small, lowpower, high-stability atomic clocks that would be suitable for use in applications involving precise navigation and/or communication.