Ring gas lasers with magneto-optical control for laser gyroscopy (invited paper)

Precise laser gyroscope for autonomous inertial navigation

“…The use of a symmetric bilateral dis charge allows the suppression of this effect; however, the compensation is not complete, which is reflected in the residual systematic error of the zero bias 0.2 deg h -1 with the instability 10 -3 - 10 -2 deg h -1 . The ring laser electrodes, two copper anodes ( 4,13 ) placed symmetrically with respect to the cold aluminium cathode ( 16 ), are connected with the cavity case by means of diffusion melting via an indium gasket. The nonevaporable getter ( 12 ) made of titanium - vanadium mixture is used to stabilise the working mixture in the course of exploitation.…”

“…(i) the sensitivity to the external magnetic field does not exceed 0.002 deg h -1 Oe -1 (the value so small in comparison with the sensitivity of Zeeman ring lasers [16] is determined by the absence of nonreciprocal elements and the linear polarisa tion of laser radiation);…”

“…If the powers of the counterpropagating waves are equal, then the lockin threshold w L in the first approximation is determined by the relation [15,16]:…”

Frequency Response of a Ring Laser with an Alternating Frequency Pedestal

“…Введение. Кольцевой лазер (КЛ) широко используют в различных системах [1,2], при этом требования к его характеристикам непрерывно возрастают. В частности, большое внимание уделяют возможности сужения зоны нечувствительности при измерении малых разностей собственных частот кольцевого резонатора (КР), т. е. при измерении малых скоростей вращения.…”