Ajoy Kumar Kar

Prof

Professor, School of Engineering & Physical Sciences, Institute of Photonics and Quantum Sciences
Professor, School of Engineering & Physical Sciences

https://orcid.org/0000-0002-8926-4664

EmailA.K.Kar@hw.ac.uk

EH14 4AS
United Kingdom

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197 Article
100 Conference contribution
3 Paper
2 Chapter
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Direct observation of an irradiance dependent nonlinear refraction in CVD single layer graphene
Demetriou, G., Biancalana, F., Abraham, E., Ji, W., Wang, Y. & Kar, A. K., 15 Feb 2021, In: Optics Communications. 481, 126535.
Research output: Contribution to journal › Article › peer-review

Open Access
File
Femtosecond laser inscribed Pr:CaF₂ waveguides: Micro-spectroscopy characterizations and refractive index reconstruction
Guo, T., Li, R., Sun, L., Cai, Y., Ren, Y., Yao, Y., Mackenzie, M. D. & Kar, A. K., 15 Apr 2020, In: Optics Communications. 461, 125243.
Research output: Contribution to journal › Article › peer-review
1 Citation (Scopus)
Polarization Analysis of a Supercontinuum Generated in a Germania-Doped Photonic Crystal Fiber
Couture, N., Ostic, R., Reddy, P. H., Das, S., Dhar, A., Pal, M., Paul, M. C., Kar, A. K. & Menard, J. M., 10 Sep 2020, 2020 Conference on Lasers and Electro-Optics. IEEE, 9193625
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Ultrafast photochemistry produces superbright short-wave infrared dots for low-dose in vivo imaging
Santos, H. D. A., Zabala Gutiérrez, I., Shen, Y., Lifante, J., Ximendes, E., Laurenti, M., Méndez-González, D., Melle, S., Calderón, O. G., López Cabarcos, E., Fernández, N., Chaves-Coira, I., Lucena-Agell, D., Monge, L., Mackenzie, M. D., Marqués-Hueso, J., Jones, C. M. S., Jacinto, C., del Rosal, B., Kar, A. K. & 2 others, Rubio-Retama, J. & Jaque, D., 10 Jun 2020, In: Nature Communications. 11, 1, 2933.
Research output: Contribution to journal › Article › peer-review

Open Access
File
4 Citations (Scopus)

3 Downloads (Pure)
Cooperative up-converted luminescence in Yb,Na:CaF₂ cladding waveguides by femtosecond laser inscription
Zhang, L., Guo, T., Ren, Y., Cai, Y., Mackenzie, M. D., Kar, A. K. & Yao, Y., 15 Jun 2019, In: Optics Communications. 441, p. 8-13 6 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
2 Citations (Scopus)

5 Downloads (Pure)

Fellow of the Optical Society of America (OSA)
Kar, Ajoy Kumar (Recipient), 1 Jan 2017
Prize: Election to learned society

Direct observation of an irradiance dependent nonlinear refraction in CVD single layer graphene

Femtosecond laser inscribed Pr:CaF2 waveguides: Micro-spectroscopy characterizations and refractive index reconstruction

Polarization Analysis of a Supercontinuum Generated in a Germania-Doped Photonic Crystal Fiber

Ultrafast photochemistry produces superbright short-wave infrared dots for low-dose in vivo imaging

Cooperative up-converted luminescence in Yb,Na:CaF2 cladding waveguides by femtosecond laser inscription

Fellow of the Optical Society of America (OSA)

Femtosecond laser inscribed Pr:CaF₂ waveguides: Micro-spectroscopy characterizations and refractive index reconstruction

Cooperative up-converted luminescence in Yb,Na:CaF₂ cladding waveguides by femtosecond laser inscription