This Letter presents an intracavity scheme for diode laser based two-photon spectroscopy. To demonstrate generality, three hyperfine transition groups of different wavelengths are shown. For the 6S–6D transitions, we achieved a times better signal-to-noise ratio than in previous work [J. Phys. Soc. Jpn. 74, 2487 (2005)] with times less laser power, revealing some previously vague and unobserved spectra. Possible mutual influences between the two-photon absorber and laser cavity were investigated for the first time to our knowledge, which leads to the application of a reliable hand-sized optical frequency reference. Our approach is applicable for most of the two-photon spectroscopy of alkali atoms.
© 2011 Optical Society of AmericaFull Article | PDF Article
N. Ph. Georgiades, E. S. Polzik, and H. J. Kimble
Opt. Lett. 19(18) 1474-1476 (1994)
Karine Le Bris, Jean-Marie Gagné, François Babin, and Marie-Claude Gagné
J. Opt. Soc. Am. B 18(11) 1701-1710 (2001)
Hui-Mei Fang, Shing-Chung Wang, and Jow-Tsong Shy
Appl. Opt. 45(13) 3173-3176 (2006)