Absolute absorption spectroscopy based on molecule interferometry

Autor(en)

Stefan Nimmrichter, Klaus Hornberger, Hendrik Ulbricht, Markus Arndt

Abstrakt

We propose a method to measure the absolute photon absorption cross section of neutral molecules in a molecular beam. It is independent of our knowledge of the particle beam density, nor does it rely on photoinduced fragmentation or ionization. The method is based on resolving the recoil resulting from photon absorption by means of near-field matter-wave interference, and it thus applies even to very dilute beams with low optical densities. Our discussion includes the possibility of internal state conversion as well as fluorescence. We assess the influence of various experimental uncertainties and show that the measurement of absolute absorption cross sections is conceivable with high precision and using existing technologies.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Ludwig-Maximilians-Universität München

Journal

Physical Review A

Band

78

Anzahl der Seiten

8

ISSN

1050-2947

DOI

https://doi.org/10.1103/PhysRevA.78.063607

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/35773537-dbc3-4b74-b616-e29673723d25