Observation of two-photon induced photoemission optogalvanic effect | Zendy

P. Kumar | Zendy; G. Padmaja | Zendy; Ashok Kumar | Zendy; V. P. N. Nampoori | Zendy; C. P. G. Vallabhan | Zendy

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Observation of two-photon induced photoemission optogalvanic effect

Author(s) -

P. Kumar,

G. Padmaja,

Ashok Kumar,

V. P. N. Nampoori,

C. P. G. Vallabhan

Publication year - 1991

Publication title -

pramana

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.513

H-Index - 52

ISSN - 0304-4289

DOI - 10.1007/bf02847215

Subject(s) - atomic physics , laser , materials science , photon energy , nitrogen laser , photon , two photon excitation microscopy , tungsten , electrode , radiation , plasma , inverse photoemission spectroscopy , optoelectronics , photoemission spectroscopy , optics , physics , x ray photoelectron spectroscopy , nuclear magnetic resonance , fluorescence , nuclear physics , quantum mechanics , metallurgy

Observation of laser induced two-photon photoemission optogalvanic (TPPOG) effect from tungsten electrode in a discharge cell using 564 nm radiation obtained from a pulsed dye laser is described. The magnitude of the POG signal is studied as a function of laser energy under various discharge parameters. Competition between one-photon and two-photon processes has been observed when nitrogen gas is used in the discharge cell.

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