Laser frequency stabilization to excited state transitions using electromagnetically induced transparency in a cascade system

Journal Article · Mon Feb 16 00:00:00 EST 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3086305· OSTI ID:21175966

Abel, R P; Mohapatra, A K; Bason, M G; Pritchard, J D; Weatherill, K J; Raitzsch, U; Adams, C S ^[1]

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1. Department of Physics, Durham University, Rochester Building, South Road, Durham DH1 3LE (United Kingdom)

We demonstrate laser frequency stabilization to excited state transitions using cascade electromagnetically induced transparency. Using a room temperature Rb vapor cell as a reference, we stabilize a first diode laser to the D{sub 2} transition and a second laser to a transition from the intermediate 5P{sub 3/2} state to a highly excited state with principal quantum number n=19-70. A combined laser linewidth of 280{+-}50 kHz over a 100 {mu}s time period is achieved. This method may be applied generally to any cascade system and allows laser stabilization to an atomic reference in the absence of a direct absorption signal.

• OSTI ID: 21175966
• Journal Information: Applied Physics Letters, Vol. 94, Issue 7; Other Information: DOI: 10.1063/1.3086305; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
EXCITED STATES
KHZ RANGE 100-1000
LASERS
OPACITY
PHOTON-ATOM COLLISIONS
RUBIDIUM
SIGNALS
STABILIZATION
TEMPERATURE RANGE 0273-0400 K
VAPORS