Microwave signal generation with optical injection locking.
Two single-mode laser diodes have been injection locked to the +1 and -1 diffracted orders of a 4.6-GHz acousto-optical modulator. The measured locking bandwidth was 3 GHz for a locking gain of 35 dB. The microwave signal at 9.2 GHz had a measured linewidth of less than a few hertz. We used this system to drive stimulated Raman transitions between the cesium ground-state hyperfine levels. We observed Ramsey fringes and used them to characterize the microwave signal phase noise.
Bouyer
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P
Gustavson
T L
TL
Haritos
K G
KG
Kasevich
M A
MA