Journal Publications:
Rakesh Ranjan Kumar, L. Nielsen, N. Volet, and Martijn J. R. Heck “Intra-Cavity Coherent Combining of DBR lasers on an InP Generic Foundry Platform,” Optics Letters 48, 1614-1617 (2023).
Rakesh Ranjan Kumar, A. Hansel, M. Far Brusatori, L. Nielsen, L. M. Augustin, N. Volet, and Martijn J. R. Heck “A 10-kHz Intrinsic Linewidth Coupled Extended-cavity DBR laser Monolithically Integrated on an InP Platform,” Optics Letters 47, 2346-2349 (2022).
Rakesh Ranjan Kumar, and Hon Ki Tsang, “High-Extinction CROW filters for Scalable Quantum Photonics,” Optics Letters 46, 134-137 (2021).
Y. Zhang*, Rakesh Ranjan Kumar*, K. Zhong, and H. K. Tsang, "Near-infrared frequency comb generation from a silicon micro-resonator," Journal of Optics 23, 10LT02 (2021).
Rakesh Ranjan Kumar, Y. Wang, Y. Zhang, and H.K. Tsang, “Quantum states of higher-order whispering gallery modes in a silicon micro-disk Resonator,” Journal of the Optical society of America B 37, 2231-2237 (2020).
Y. Zhang, K. Zhong, G. Hu, D. Yi, and Rakesh Ranjan Kumar, and H. K. Tsang, “Sub-milliwatt optical frequency combs in dual-pumped high-Q multimode silicon resonators,” Applied Physics Letters 117, 221103 (2020).
Rakesh Ranjan Kumar, X. Wu, and H. K. Tsang, “Compact High-Extinction Tunable CROW filters for Integrated Quantum Photonic Circuits,” Optics Letters 45, 1289-1292, (2020).
Rakesh Ranjan Kumar, M Raevskaia, V. Pogoretskii, Y. Jiao and H.K. Tsang “InP membrane micro-ring resonator for generating heralded single photons,” Journal of Optics 21, 115201 (2019).
Rakesh Ranjan Kumar, M Raevskaia, V. Pogoretskii, Y. Jiao and H.K. Tsang “Entangled photon pair generation from an InP membrane micro-ring resonator,” Applied Physics Letters 114, 021104 (2019).
Rakesh Ranjan Kumar, A. R. Barik, E.M. Vinod, M. Bapna, K. S. Sangunni and K.V. Adarsh “Crossover from Photodarkening to Photobleaching in a-GexSe100-x thin films,” Optics Letters 38, 1682-1684 (2013).
M. Bapna, R. Sharma, A. R. Barik, P. Khan, Rakesh Ranjan Kumar, and K. V. Adarsh, “Light induced diffusion driven self-assembly of Ag nanoparticles in a-Se/Ag bi-layer thin film with ultrafast optical response,” Applied Physics Letters 102, 213110 (2013).
Y. Jiao, et. al “Indium Phosphide Membrane Nanophotonic Integrated Circuits on Silicon,” Physica Status solidi (a), 1900606, (2019).
Conference Publications:
Rakesh Ranjan Kumar, L. Nielsen, N. Volet, and M. J. R. Heck “ Intra-Cavity Coherent Combining of DBR lasers on an InP Generic Foundry Platform,” ECIO, Enschede, Netherlands (2023).
Rakesh Ranjan Kumar, A. Hansel, M. Far Brusatori, L. Nielsen, N. H. Arent, N. Volet, and M. J. R. Heck “ Sub-10 kHz Intrinsic Linewidth Extended-cavity DBR laser on an InP Generic Foundry Platform,” OFC, San Diego, CA, USA (2022), paper Tu3D.7
Rakesh Ranjan Kumar, X. Wu, Y. Zhang, and H. K. Tsang, “Integrated photon-pair generation and ~112 dB Pump rejection filters for silicon Quantum Photonics”, CLEO, San Jose, CA, USA (2020), paper SM3O.2.
Rakesh Ranjan Kumar, X. Wu, and H. K. Tsang, “Photon-pair generation and filtering using monolithically integrated silicon micro-disk and coupled resonator optical waveguide” CLEO, San Jose, CA, USA (2019), paper STh1H.2.
Rakesh Ranjan Kumar, M. Feng, M Raevskaia, V. Pogoretskii, Y. Jiao and H.K. Tsang, “Influence of nonlinear losses on spontaneous four-wave mixing in InP membrane micro-ring resonator”, IEEE Photonics Conference (IPC), Reston, VA, USA (2018).
Hon Ki Tsang, Y. Wang, Rakesh Ranjan Kumar, et. al, “Bound States in the continuum for photonic integration and InP membranes for heralded single photon generation,” SPIE Photonics Europe, France, (2020) (Invited talk).
Y. Zhang, W. Zhou, D. Yi, Y. Tong, Y. Wang, R.R. Kumar, and H. K. Tsang, “Continuous-wave Raman Lasing in Silicon Ring Resonator with sub-milliwatt pump Threshold, “IEEE Photonics Conference (IPC) (Post-deadline paper), San Antonio, TX, USA (2019).
Y. Zhang, W. Zhou, D. Yi, Z. Zhang, Y. Tong, Rakesh Ranjan Kumar, Y. Wang, and H. K. Tsang, “Highly Efficient cascaded four-wave mixing in a silicon racetrack resonator,” Asia Communications and Photonics Conference, Chengdu, China, (2019), Paper M4A.240.