Reducing the linewidth of a diode laser below 30 Hz by stabilization to a reference cavity with finesse above 10^5

Details Reducing the linewidth of a diode laser below 30 Hz by stabilization to a reference cavity with finesse above 10^5 Reducing the linewidth of a diode laser below 30 Hz by stabilization to a reference cavity with finesse above 10^5

2001-07-11

arxiv.org/abs/physics/0107021v2

Optics Letters, vol. 26, pp. 1562 - 1564 (2001)

Physics

Optics

8 pages, 4 figures on 3 additional pages, corrected version, submitted to Optics Letters

Scientific paper

10.1364/OL.26.001562

An extended cavity diode laser operating in the Littrow configuration emitting near 657 nm is stabilized via its injection current to a reference cavity with a finesse of more than 10^5 and a corresponding resonance linewidth of 14 kHz. The laser linewidth is reduced from a few MHz to a value below 30 Hz. The compact and robust setup appears ideal for a portable optical frequency standard using the Calcium intercombination line.

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