Compact, thermal-noise-limited optical cavity for diode laser stabilization at 1 x 10-15

Abstract

We demonstrate phase and frequency stabilization of a diode laser at the thermal noise limit of a passive optical cavity. The system is compact and exploits a cavity design that reduces vibration sensitivity. The sub-Hz laser is characterized by comparison to a second independent system with similar fractional frequency stability (1 x 10-15 at 1 s). The laser is further characterized by resolving a 2 Hz wide, ultranarrow optical clock transition in ultracold strontium.

14 double-spaced pages (= 3 journal pages), 4 figures

References in corpus (5)

• Direct excitation of the forbidden clock transition in neutral 174Yb atoms confined to an optical lattice
• Sub-dekahertz ultraviolet spectroscopy of 199Hg+
• Systematic study of the ${}^{87}$Sr clock transition in an optical lattice
• Optical atomic coherence at the one-second time scale
• Coherence of qubits based on single Ca${}^{+}$ ions

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