Classical theory of laser noise

J. D. Close, Nicholas P. Robins, Craig M. Savage +4 more

By comparison between experiment and theory, we show how the classical noise on a multi-state atom laser beam increases with increasing flux. Such considerations will be important in future precision measurement techniques utilising atom lasers.

Hermann Haken, H. Sauermann, Ch. Schmid +1 more

Peter W. Milonni

It is well known that laser oscillation is initiated by spontaneous radiation ‘‘noise.’’ Evidence for this is often based on the complete theory of laser oscillation, including the quantization of the electromagnetic field. In this article, the buildup of laser oscillation from quantum noise is demonstrated using the most elementary classical equation describing the amplification of laser intensity.

Hermann Haken

Timothy C. Ralph, C. C. Harb, Hans‐A. Bachor

The search for ever quieter light sources has fueled experimental interest in the noise properties of injection locked lasers [ 1,2,3], Ref. 1 showed that the injection of a small signal into a pump noise suppressed semi-conductor laser could suppress small longitudinal side modes whilst leaving the non-classical noise characteristics of the free running laser unaffected. In contrast [2] and [3] found that in Nd:YAG lasers the free running noise characteristics were suppressed and the output noise was an amplified version of the injected signal.

Hermann Haken