Research output per year
Research output per year
Personal profile
Overview
Completed the PhD in Physics at Jacobs University Bremen, Germany, in March 2012. Worked as a post-doctoral fellow at Lund University from 2012 to 2015 and then as an independent researcher (supported by the Swedish Research Council) from 2016 to 2019. Worked at many leading institutes including European Synchrotron Research Facility (ESRF, France), FOM Institute for Atomic and Molecular Physics (AMOLF, the Netherlands), and Max-Planck Institute for Quantum Optics (MPQ, Germany) during university education. Specialization in optical nonlinear spectroscopy. One of the active developers of fluorescence and photocurrent detected two-dimensional spectroscopy. Main research focus is on investigating the role of photon induced quantum coherence in the functioning of photo-active devices (both natural and man-made). Important results have been published in Nature Communications, Physical Review Letters, Chemical Science, Journal of Physical Chemistry Letters, ACS Energy Letters, Physical Review A, etc.
Research Interests
- Phase modulation
- Fluorescence and photocurrent detected two-dimensional spectroscopy
- Coherent excitations
- Semiconductors
- Superconductors
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Collaborations and top research areas from the last five years
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Effects of impurity band on multiphoton photocurrent in GaN and InGaN photodetectors
Wang, C., Ali, A., Wu, J., Huang, W., Lu, H. & Karki, K. J., Mar 2024, In: Optical Materials. 149, 114986.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
Multiphoton photocurrent in wide bandgap semiconductors for nonlinear optoelectronics: Comparison of GaP, GaN/InGaN, and SiC
Wang, C., Ali, A. & Karki, K. J., 5 Feb 2024, In: Applied Physics Letters. 124, 6, 062101.Research output: Contribution to journal › Article › peer-review
Open Access1 Scopus citations -
In Operando Quantification of Single and Multiphoton Photocurrents in GaP and InGaN Photodetectors with Phase-Modulated Femtosecond Light Pulses
Wang, C., Cai, J., Liu, X., Chen, C., Chen, X. & Karki, K. J., 9 Mar 2023, In: ACS Photonics.Research output: Contribution to journal › Article › peer-review
4 Scopus citations -
Investigation of multiphoton photocurrent in SiC using phase-modulated femtosecond laser pulses
Ali, A., Wang, C., Cai, J. & Karki, K. J., 2023, Quantum and Nonlinear Optics X. He, Q., Kim, D-S. & Li, C-F. (eds.). SPIE, 1277512. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 12775).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
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Advances in nonlinear spectroscopy using phase modulated light fields: prospective applications in perturbative and non-perturbative regimes
Karki, K. J. & Ciappina, M. F., 22 Jun 2022, (E-pub ahead of print) In: Advances in Physics: X. 7, 1Research output: Contribution to journal › Article › peer-review
Open Access8 Scopus citations