Double photon excitation of high-rydberg atoms as a long-lived s

Details Double photon excitation of high-rydberg atoms as a long-lived s Double photon excitation of high-rydberg atoms as a long-lived s

1985-02-21

1986-07-15

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2503361, 250340, G01J 536

Patent

active

046008403

ABSTRACT:
A method and apparatus for detecting submillimeter or IR radiation is disclosed. A rare gas, such as xenon, is supplied at its ground state via a pressurized cylinder and an adjustable leak valve into a cryogenically-cooled detection area. The ground state of xenon is double-photon excited to a particularized level of the Rydberg series by a resonance lamp and a laser. The doubly-excited gas is then further excited by the radiation to be measured. A field ionization and an ion measurement indicative of the radiation intensity is achieved.

REFERENCES:
patent: 3764807 (1973-10-01), Pollack
patent: 3914618 (1975-10-01), Harris
patent: 4024395 (1977-05-01), Hill et al.
patent: 4293769 (1981-10-01), Kleppner

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