Zobrazeno 1 - 10
of 513
pro vyhledávání: '"Ghosh Nirmalya"'
Autor:
Dhara, Ritwik, Guchhait, Shyamal, Sarkar, Meghna, Ashutosh, Swain, Modak, Niladri, Ghosh, Nirmalya
Quantum weak measurements became extremely popular in classical optics to amplify small optical signals for fundamental interests and potential applications. Later, a more general extension, joint weak measurement has been proposed to extract weak va
Externí odkaz:
http://arxiv.org/abs/2412.07440
The optical Spin-Hall effect originates from the interaction between the spin angular momentum (SAM) and extrinsic orbital angular momentum (OAM) of light, leading to mutual interrelations between the polarization and trajectory of light in case of n
Externí odkaz:
http://arxiv.org/abs/2411.14104
Coherent perfect absorption (CPA) has been a topic of considerable contemporary research interest. However, its implementation in practical applications has been limited, since it has been demonstrated only for plane waves till now. The issue for bea
Externí odkaz:
http://arxiv.org/abs/2411.11750
Autor:
Kumar, Ram Nandan, Nayak, Jeeban Kumar, Gupta, Subhasish Dutta, Ghosh, Nirmalya, Banerjee, Ayan
We introduce a new class of optical micromotors driven by the spin-orbit interaction of light and spin-driven fluid flows leading to simultaneous rotation and revolution of the micromotors. The micromotors are essentially birefringent liquid crystal
Externí odkaz:
http://arxiv.org/abs/2410.20614
We demonstrate an effective and optimal strategy for generating spatially resolved longitudinal spin angular momentum (LSAM) in optical tweezers by tightly focusing first-order azimuthally radially polarized (ARP) vector beams with zero intrinsic ang
Externí odkaz:
http://arxiv.org/abs/2409.17856
We have developed a rectangular loop interferometer (RLI) that confines light in a rectangular path and facilitates various interesting applications. Such a device can yield the sum of numerous geometric series converging to different values between
Externí odkaz:
http://arxiv.org/abs/2407.16501
Autor:
Biswas, Sounak Sinha, Remesh, Ghanasyam, Achanta, Venu Gopal, Banerjee, Ayan, Ghosh, Nirmalya, Gupta, Subhasish Dutta
Reflectionless potentials following the prescription of Kay and Moses allow for total transmission of incoming waves of any kinetic energy. The optical analogue of such potentials occur as dielectric stratified media that can offer null reflectivity
Externí odkaz:
http://arxiv.org/abs/2403.20129
Autor:
Kumar, Ram Nandan, Roy, Sauvik, Ranjan, Anand Dev, Gupta, Subhasish Dutta, Ghosh, Nirmalya, Banerjee, Ayan
Spin orbit interaction (SOI) due to tight focusing of light in optical tweezers has led to exciting and exotic avenues towards inducing rotation in microscopic particles. However, instances where the back action of the particles influences and modifi
Externí odkaz:
http://arxiv.org/abs/2402.07655
Publikováno v:
Appl. Phys. Lett. 125, 071106 (2024)
We observe clear precessional motion of highly birefringent liquid crystal (LC) particles trapped in a spherically aberrated optical trap which is built around a tilted refractive index stratified medium. For input circularly polarized light, the bre
Externí odkaz:
http://arxiv.org/abs/2402.07638
Autor:
Modak, Niladri, Ashutosh, Swain, Guchhait, Shyamal, Ghosh, Sayan, Dhara, Ritwik, Nayak, Jeeban Kumar, Das, Sourin, Ghosh, Nirmalya
Despite its non-Hermitian nature, the transverse optical beam shift exhibits both real eigenvalues and non-orthogonal eigenstates. To explore this unexpected similarity to typical PT (parity-time)-symmetric systems, we first categorize the entire par
Externí odkaz:
http://arxiv.org/abs/2310.14210