In this paper, a fully differential injection which enhances the harmonics in the injection locked frequency divide-by-4 is proposed to widen the locking range with low injected power levels. Designed ...

Improving frequency stability and enhance of the frequency tunability by using self-injection locking by delayed reflection is studied. Theoretical analysis, numerical calculations and experimental ...

Scientists have captured the moment a laser "comes to life"—and what they found challenges long-held beliefs. Using a special ...