Frequency locking of laser diodes using an optically pumped cesium beam tube (frequency standard)

Hisadome, Kenji; Kihara, Masami

doi:10.1109/freq.1990.177478

Cited by 3 publications

References 18 publications

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New design for a high performance optically pumped cesium beam tube

Giordano

Hamel

Petit

et al. 1991

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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An optically pumped cesium beam resonator has been designed including three successive magnetic field regions. The optical interactions take place in the first and third regions, where the magnetic field has the required value of 3x10(-5) T. The microwave interaction occurs in the intermediate region, where the value of the C-field is typically set to 4x10(-6) T. It has been verified that the magnetic field profile along the cesium beam does not induce Majorana transitions. Using a single laser diode emitting at 852 nm with a linewidth of about 30 MHz, the resonator gives an excellent amplitude signal to noise ratio equal to 20000 in a 1-Hz bandwidth.

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New design for a high performance optically pumped cesium beam tube

Giordano

Hamel

Petit

et al. 1991

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Theoretical analysis of fluorescence light shifts in optically pumped cesium beam frequency standards

Hisadome

Kihara

1991

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Shirley's analysis (1985) is generalized to calculate the fluorescence light shifts in various optically pumped Cs beam standards, especially in the two-beam type frequency standard that enables a real-time correction of an end-to-end cavity phase shift. Using tables of light shift coefficients and mean fluorescence photon numbers per atom, fluorescence light shifts in one- and two-beam type optically pumped Cs beam frequency standards using noncycling detection and cycling detection, are evaluated. Results obtained are useful to correct the fluorescence light shifts in optically pumped Cs beam frequency standards.

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Prototype of an optically pumped cesium beam frequency standard

Hisadome

Kihara

Proceedings of the 45th Annual Symposium on Frequency Control 1991

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The prototype of an optically pumped cesium beam frequency standard is composed of three modules: a cesium beam tube, a microwave module, and a laser diode module.In the cesium beam tube, background lights from the windows are r e d u d . In the microwave module, an automatic level conmller is used in order to reduce long-term frequency instabilities caused by the microwave level fluctuation. In the laser diode module, three laser diodes are connected to the cesium beam tube by polarization maintaining fibers and fiber couplers.The short-term frequency stability (two-sample standard deviation), which is estimated from the preliminary experimental results gained from the prototype, is about oY(z) = 1 x 10-'~/./z.

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Frequency locking of laser diodes using an optically pumped cesium beam tube (frequency standard)

Cited by 3 publications

References 18 publications

New design for a high performance optically pumped cesium beam tube

New design for a high performance optically pumped cesium beam tube

Theoretical analysis of fluorescence light shifts in optically pumped cesium beam frequency standards

Prototype of an optically pumped cesium beam frequency standard

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