The Linewidth of Ramsey Laser with Bad Cavity

Details The Linewidth of Ramsey Laser with Bad Cavity The Linewidth of Ramsey Laser with Bad Cavity

2010-01-15

arxiv.org/abs/1001.2670v1

Physics

Quantum Physics

Scientific paper

We investigate a new laser scheme by using Ramsey separated-field technique with bad cavity. By studying the linewidth of the stimulated-emission spectrum of this kind of laser inside the cavity, we find its linewidth is more than two orders of magnitude narrower than atomic natural linewidth, and it is far superior to that of conventional optical Ramsey method and any other available subnatural linewidth spectroscopy at present. Since any cavity related noise is reduced to cavity-pulling effect in bad cavity laser, this Ramsey laser provides the possibility of precision subnatural linewidth spectroscopy, which is critical for the next generation of optical clock and atom interferometers.

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