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Observation of two-photon induced photoemission optogalvanic effect

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Abstract

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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Authors and Affiliations

  1. Laser Division, Department of Physics, Cochin University of Science and Technology, 682 022, Cochin, India

    P R Sasi Kumar, G Padmaja, A V Ravi Kumar, V P N Nampoori & C P G Vallabhan

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  1. P R Sasi Kumar
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  2. G Padmaja
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  3. A V Ravi Kumar
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  4. V P N Nampoori
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  5. C P G Vallabhan
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Sasi Kumar, P.R., Padmaja, G., Ravi Kumar, A.V. et al. Observation of two-photon induced photoemission optogalvanic effect. Pramana - J. Phys 36, 423–427 (1991). https://doi.org/10.1007/BF02847215

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  • DOI: https://doi.org/10.1007/BF02847215

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