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Stimulated emission spectroscopy of Rydberg matter: observation of Rydberg orbits in the core ions

Artikel i vetenskaplig tidskrift
Författare Leif Holmlid
Publicerad i Applied Physics B-Lasers and Optics
Volym 87
Nummer/häfte 2
Sidor 273-281
ISSN 1432-0649
Publiceringsår 2007
Publicerad vid Institutionen för kemi
Sidor 273-281
Språk en
Länkar dx.doi.org/10.1007/s00340-007-2579-...
Ämnesord DIFFUSE INTERSTELLAR BANDS, METASTABLE ATOMIC-HYDROGEN, EXTENDED RED, EMISSION, TIME-OF-FLIGHT, EXCITED-STATES, ENERGY-RELEASE, UIR BANDS, EXCITATION, MOLECULES, CLUSTERS
Ämneskategorier Fysikalisk kemi

Sammanfattning

The short-wavelength bands generated in Rydberg matter (RM) formed by K atoms have been studied both in an operating laser cavity and by amplified emission in the RM, with higher resolution than previously. Transitions down to principal quantum number n" >= 6 in the core ions have been identified previously in the infrared range, while transitions down to n" = 5 and 4 are now observed for transitions of the type n" = 7 -> 4. Efficient down-conversion of emitted wavelengths shorter than 800 nm is found in the RM medium in the cavity by a process similar to two-photon emission. From the good description of the transitions with just one quantum number n", it is concluded that the transitions studied are single-electron transitions in the core ions coupled to the conduction band; two-electron processes as proposed previously are not involved in this wavelength range where the change in angular momentum is relatively small.

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