STIMULATED BRILLOUIN RING LASER GYROSCOPE WITH OPTICAL FREQUENCY OFFSET OF COUNTERPROPAGATING PUMP LASER SIGNALS

A disk resonator is pumped by counterpropagating pump signals to produce corresponding counterpropagating Brillouin laser signals. The pump laser optical frequencies are separated by a frequency offset Δνbut excite the same nominal resonator optical mode; the Brillouin laser optical frequencies are separated by a beat frequency Δνwith 0