Journal
PHYSICAL REVIEW A
Volume 87, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.87.013818
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Funding
- Australian Research Council [DP0877938, DE120102028, FT0991631, DP1094500]
- Australian Research Council [DE120102028, DP1094500] Funding Source: Australian Research Council
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We present two-photon spectroscopy of a thermal rubidium vapor confined to the hollow core of a photonic-crystal fiber. Linewidths as narrow as 10 MHz were observed on the 5S(1/2) -> 5D(5/2) transition enabling the hyperfine splitting of the excited state to be resolved. Very strong nonlinear absorption (>90%) was observed, with substantial absorption maintained over large detunings (9 GHz) from an intermediate state. These attributes make this system ideal for many frequency metrology and quantum optics applications. DOI: 10.1103/PhysRevA.87.013818
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