Precision spectroscopy by photon-recoil signal amplification

Narrow line cooling: finite photon recoil dynamics.

We present an extensive study of the unique thermal and mechanical dynamics for narrow-line cooling on the 1S0-3P1 88Sr transition. For negative detuning, trap dynamics reveal a transition from the semiclassical regime to the photon-recoil-dominated quantum regime, yielding an absolute minima in the equilibrium temperature below the single-photon-recoil limit. For positive detuning, the cloud d...

Photon recoil momentum in dispersive media.

A systematic shift of the photon recoil momentum due to the index of refraction of a dilute gas of atoms has been observed. The recoil frequency was determined with a two-pulse light grating interferometer using near-resonant laser light. The results show that the recoil momentum of atoms caused by the absorption of a photon is n variant Planck's k, where n is the index of refraction of the gas...

Signal amplification by rolling circle amplification on DNA microarrays.

While microarrays hold considerable promise in large-scale biology on account of their massively parallel analytical nature, there is a need for compatible signal amplification procedures to increase sensitivity without loss of multiplexing. Rolling circle amplification (RCA) is a molecular amplification method with the unique property of product localization. This report describes the applicat...

Spectroscopy of 144Ho using recoil-isomer tagging

P. J. R Mason,1,* D. M. Cullen,1 C. Scholey,2 P. T. Greenlees,2 U. Jakobsson,2 P. M. Jones,2 R. Julin,2 S. Juutinen,2 S. Ketelhut,2 M. Leino,2 M. Nyman,2 P. Peura,2 A. Puurunen,2 P. Rahkila,2 P. Ruotsalainen,2 J. Sorri,2 J. Sarén,2 J. Uusitalo,2 and F. R. Xu3 1Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom 2Department of Physics, University of Jyväskylä, Jyväs...

Four photon parametric amplification