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Sunil Kumar
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Femtosecond carrier dynamics and saturable absorption in graphene suspensions
S Kumar, M Anija, N Kamaraju, KS Vasu, KS Subrahmanyam, AK Sood, ...
Appl. Phys. Lett. 95 (19), 191911-191913, 2009
2322009
Large nonlinear absorption and refraction coefficients of carbon nanotubes estimated from femtosecond z-scan measurements
N Kamaraju, S Kumar, AK Sood, S Guha, S Krishnamurthy, CNR Rao
Applied Physics Letters 91 (25), 2007
852007
Self-functionalized ultrastable water suspension of luminescent carbon quantum dots
A Singh, PK Mohapatra, D Kalyanasundaram, S Kumar
Materials Chemistry and Physics 225, 23-27, 2019
422019
Graphene analogue BCN: femtosecond nonlinear optical susceptibility and hot carrier dynamics
S Kumar, N Kamaraju, KS Vasu, A Nag, AK Sood, CNR Rao
Chem. Phys. Lett. 499 (1-3), 152-157, 2010
392010
Single-pulse CARS based multimodal nonlinear optical microscope for bioimaging
S Kumar, T Kamali, JM Levitte, O Katz, B Hermann, R Werkmeister, ...
Optics Express 23 (10), 13082-13098, 2015
372015
Temperature-dependent chirped coherent phonon dynamics in Bi2Te3 using high-intensity femtosecond laser pulses
N Kamaraju, S Kumar, AK Sood
Europhysics Letters 92 (4), 47007, 2010
362010
Terahertz spectroscopy of single-walled carbon nanotubes in a polymer film: observation of low-frequency phonons
S Kumar, N Kamaraju, B Karthikeyan, M Tondusson, E Freysz, AK Sood
The Journal of Physical Chemistry C 114 (29), 12446-12450, 2010
302010
Ultrafast photoinduced enhancement of nonlinear optical response in 15-atom gold clusters on indium tin oxide conducting film
S Kumar, ES Shibu, T Pradeep, AK Sood
Optics Express 21 (7), 8483-8492, 2013
292013
Double walled carbon nanotubes as ultrafast optical switches
N Kamaraju, S Kumar, YA Kim, T Hayashi, H Muramatsu, M Endo, ...
Applied Physics Letters 95 (8), 2009
282009
Plasmonic Charge Transfers in Large‐Scale Metallic and Colloidal Photonic Crystal Slabs
S Sarkar, V Gupta, T Tsuda, J Gour, A Singh, O Aftenieva, M Anja, ...
Advanced Functional Materials 31, 2011099, 2021
262021
CVD-graphene for low equivalent series resistance in rGO/CVD-graphene/Ni-based supercapacitors
YH Kwon, S Kumar, J Bae, Y Seo
Nanotechnology 29 (19), 195404, 2018
252018
Optical Damage Limit of Efficient Spintronic THz Emitters
S Kumar, A Nivedan, A Singh, Y Kumar, P Malhotra, M Tondusson, ...
iScience 24, 103152, 2021
232021
Synthesis and photovoltaic properties of organic dyes containing N-fluoren-2-yl dithieno [3, 2-b: 2′, 3′-d] pyrrole and different donors
S Kumar, KRJ Thomas, CT Li, KC Ho
Organic Electronics 26, 109-116, 2015
222015
Ultrafast electron dynamics and cubic optical nonlinearity of freestanding thin film of double walled carbon nanotubes
N Kamaraju, S Kumar, B Karthikeyan, A Moravsky, RO Loutfy, AK Sood
Applied Physics Letters 93 (9), 2008
212008
Design of a compact and broadband THz polarizationsplitter based on gradient dual core photonic crystal fiber
V Kumar, RK Varshney, S Kumar
Applied Optics 59 (7), 1974-1979, 2020
202020
Sub-bandgap activated charges transfer in a graphene-MoS2-graphene heterostructure
S Kumar, A Singh, A Nivedan, S Kumar, SJ Yun, YH Lee, M Tondusson, ...
Nano Select 2 (10), 2019-2028, 2021
192021
Acoustic and optical phonon dynamics from femtosecond time-resolved optical spectroscopy of the superconducting iron pnictide Ca(Fe0.944Co0.056)2As2
S Kumar, L Harnagea, S Wurmehl, B Buchner, AK Sood
EPL 100 (5), 57007, 2012
192012
Large-amplitude chirped coherent phonons in tellurium mediated by ultrafast photoexcited carrier diffusion
N Kamaraju, S Kumar, M Anija, AK Sood
Physical Review B 82 (19), 195202, 2010
182010
Role of H-bond along with oxygen and zinc vacancies in the enhancement of ferromagnetic behavior of ZnO films: An experimental and first principle-based study
P Singh, V Mishra, S Barman, M Balal, SR Barman, A Singh, S Kumar, ...
Journal of Alloys and Compounds 889, 161663, 2021
172021
THz pulses from optically excited Fe, Pt and Ta based Spintronic Heterostructures
S Kumar, A Nivedan, A Singh, S Kumar
Pramana Journal of Physics 95, 75, 2021
172021
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Articles 1–20