Improved rubidium frequency standards using diode lasers with AM and FM noise control

Csaba Szekely; R. E. Drullinger

doi:10.1117/12.143682

30 April 1993 Improved rubidium frequency standards using diode lasers with AM and FM noise control

Csaba Szekely, R. E. Drullinger

Proceedings Volume 1837, Frequency-Stabilized Lasers and Their Applications; (1993) https://doi.org/10.1117/12.143682
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

Diode-laser-pumped, rubidium cell frequency standards have potential short-term stability that is vastly better than their lamp-pumped counterparts. However, AM and FM noise in monolithic laser diodes limit their performance. With extended-cavity, grating-feedback diode lasers, the AM and FM noise can be controlled. In the preliminary work reported here, we have used such a laser to make measurements in two different rubidium cell systems. Measured line Q and signal-to-noise ratios corresponding to (sigma) _y((tau) ) equals 4 X 10^-13 (tau) ^-1/2 in a commercial, buffer gas type standard and (sigma) _y((tau) ) equals 2 X 10^-13 (tau) ^-1/2 in an evacuated, wall-coated cell are demonstrated. We believe both of these numbers can be improved significantly in a fully engineered and optimized standard.

Citation Download Citation

Csaba Szekely and R. E. Drullinger "Improved rubidium frequency standards using diode lasers with AM and FM noise control", Proc. SPIE 1837, Frequency-Stabilized Lasers and Their Applications, (30 April 1993); https://doi.org/10.1117/12.143682

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