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Observation of stimulated emission by direct three-photon excitation

Author

Listed:
  • Guang S. He

    (Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York)

  • Przemyslaw P. Markowicz

    (Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York)

  • Tzu-Chau Lin

    (Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York)

  • Paras N. Prasad

    (Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York)

Abstract

Multiphoton processes, predicted1 theoretically in 1931, were for a long time considered to be mainly of academic interest. This view changed when it was shown2,3 that a two-photon absorption process could, because of a quadratic dependence of excitation on intensity, produce a spatially confined excitation useful for three-dimensional data storage and imaging. Two-photon absorption has received considerable attention recently because of the development of highly efficient two-photon-sensitive materials, leading to numerous technological applications4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28. These successes have created interest in exploring applications based on three-photon excitations29. For a three-photon process, a longer excitation wavelength such as those common in optical communications can be used. Also, the cubic dependence of the three-photon process on the input light intensity provides a stronger spatial confinement, so that a higher contrast in imaging can be obtained. Here we report the observation of a highly directional and up-converted stimulated emission as an amplified spontaneous emission, produced in an organic chromophore solution by a strong simultaneous three-photon absorption at 1.3 µm. This achievement suggests opportunities for a three-photon process in frequency-upconversion lasing, short-pulse optical communications, and the emerging field of biophotonics.

Suggested Citation

  • Guang S. He & Przemyslaw P. Markowicz & Tzu-Chau Lin & Paras N. Prasad, 2002. "Observation of stimulated emission by direct three-photon excitation," Nature, Nature, vol. 415(6873), pages 767-770, February.
    • Handle: RePEc:nat:nature:v:415:y:2002:i:6873:d:10.1038_415767a
    DOI: 10.1038/415767a
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    Cited by:

    1. Rui Zhou & Laizhi Sui & Xinbao Liu & Kaikai Liu & Dengyang Guo & Wenbo Zhao & Shiyu Song & Chaofan Lv & Shu Chen & Tianci Jiang & Zhe Cheng & Sheng Meng & Chongxin Shan, 2023. "Multiphoton excited singlet/triplet mixed self-trapped exciton emission," Nature Communications, Nature, vol. 14(1), pages 1-13, December.

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