G K Samanta
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Explore the profile of G K Samanta including associated specialties, affiliations and a list of published articles.
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Articles
49
Citations
54
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Recent Articles
1.
Sarkar S, Ebrahim-Zadeh M, Samanta G
Sci Rep
. 2024 Dec;
14(1):30872.
PMID: 39730576
Talbot length, the distance between two consecutive self-image planes along the propagation axis for a periodic diffraction object (grating) illuminated by a plane wave, depends on the period of the...
2.
Kumar S, Pal A, Shiri A, Samanta G, Gbur G
Sci Rep
. 2024 Jul;
14(1):16647.
PMID: 39025910
As a vector version of scalar Bessel beams, Poincaré-Bessel beams (PBBs) have attracted a great deal of attention due to their non-diffracting and self-healing properties as well as the presence...
3.
Bachimanchi H, Sarkar S, Ebrahim-Zadeh M, Samanta G
Opt Express
. 2024 Jun;
32(9):15967-15977.
PMID: 38859235
We report on a simple experimental scheme demonstrating nonlinear frequency upconversion of the Talbot effect with controllable Talbot lengths at high conversion efficiency. Using a microlens array (MLA) as an...
4.
Sharma V, Kumar S, Samanta G, Ebrahim-Zadeh M
Opt Express
. 2022 Feb;
30(2):1195-1204.
PMID: 35209284
We report the generation of tunable high-order optical vortices in the mid-infrared (mid-IR) using a picosecond optical parametric oscillator (OPO). The OPO is based on MgO:PPLN as the nonlinear gain...
5.
Sharma V, Kumar S, Samanta G, Ebrahim-Zadeh M
Opt Lett
. 2021 Jul;
46(13):3235-3238.
PMID: 34197424
We report a high-average-power picosecond optical vortex source tunable in the near-infrared, using an antiresonant-ring (ARR) interferometer internal to an optical parametric oscillator (OPO) in combination with an external cylindrical...
6.
Srinivasa Rao A, Yadav D, Samanta G
Opt Lett
. 2021 Feb;
46(3):657-660.
PMID: 33528433
We demonstrate a novel experimental scheme to generate and study the nonlinear frequency conversion of a three-dimensional (3D) optical Bessel bottle beam (BBB). Using a single axicon and standard optical...
7.
Yadav D, Ghosh A, Saripalli R, Samanta G
Opt Lett
. 2020 Sep;
45(18):5109-5112.
PMID: 32932465
We report a compact source of high power, tunable, ultrafast yellow radiation using fourth-harmonic generation of a mid-IR laser in two-stage frequency-doubling processes. Using : laser at 2360 nm frequency-doubled...
8.
Sharma V, Kumar S, Samanta G, Ebrahim-Zadeh M
Opt Express
. 2020 Aug;
28(15):21650-21658.
PMID: 32752438
Structured beams, conventionally generated through the spatial mode conversion of the Gaussian laser beams, have attracted great interest in recent years. Optical parametric oscillators (OPOs) have demonstrated the potential for...
9.
Sharma V, Samanta G, Kumar S, Singh R, Ebrahim-Zadeh M
Opt Lett
. 2019 Oct;
44(19):4694-4697.
PMID: 31568419
We report a continuous-wave (cw) optical parametric oscillator (OPO) generating optical vortices tunable in the ultraviolet (UV). Based on MgO:sPPLT as the nonlinear crystal, the singly resonant OPO is pumped...
10.
Harshith B, Samanta G
Sci Rep
. 2019 Jul;
9(1):10916.
PMID: 31358804
We report on a simple and compact experimental scheme to generate high-power, ultrafast, higher-order vortex-array beams. Simply by using a dielectric microlens-array (MLA) and a plano-convex lens, we have generated...