Abstract

We demonstrate an intra-cavity scheme for diode laser based on two-photon spectroscopy. Three 133Cs hyperfine transition groups of different wavelengths are shown. For the 6S-6D transitions, we achieved 102 times better signal-to-noise ratio than previous work1 with 10-3 times less laser power, revealing some previously vague and unobserved spectra.

© 2011 Optical Society of America

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