INSTITUTIONAL DIGITAL REPOSITORY

Browsing by Author "Pal, V."

Browsing by Author "Pal, V."

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  • Autofocused asymmetric aberration laser beams 
    Singh, S.; Dav, V.; Pal, V. (2022-09-19)
    We have generated asymmetric aberration laser beams (aALBs) with auto-focusing properties. The asymmetry in the phase distribution of aALBs is deliberately exploited for controlling spatial intensity distribution, and ...
  • Autofocusing and Self-Healing properties of aberration laser beams in a turbulent media 
    Dev, V.; Reddy, A. N. K.; Ustinov, A. V.; Khonina, S. N.; Pal, V. (2021-11-22)
    We present the autofocusing and self-healing properties of aberration laser beams (ALBs) in a turbulent media. The ALB is generated by a diffractive optical element (DOE) whose phase profile consists of radial and periodic ...
  • Design of diffractive optical elements for shaping the laser intensity distribution 
    Dev, V.; Reddy, A. N. K.; Pal, V. (2021-12-01)
    We present simple designs of diffractive optical elements for generating high quality laser beams of different spatial shapes with uniform intensity distribution. The numerical results are presented for uniform intensity ...
  • Divergence and self-healing of a discrete vortex formed by phase-locked lasers 
    Dev, V.; Pal, V. (2022-08-22)
    Optical beams carrying orbital angular momentum (optical vortices) are sought for various applications, such as optical communications, optical trapping and manipulation, and material processing. Many of these applications ...
  • Dynamics of dissipative topological defects in coupled phase oscillators 
    Mahler, S.; Pal, V.; Tradonsky, C.; Chriki, R.; Friesem, A. A.; Davidson, N. (2021-08-19)
    The dynamics of topological defects in a system of coupled phase oscillators, arranged in one and two-dimensional arrays, was numerically investigated using the Kuramoto model. After a rapid decay of the number of ...
  • Effect of linewidth enhancement factor on the generation of optical vortices in a class-A degenerate cavity semiconductor laser 
    Bouchereau, Y.; Karuseichyk, S.; Guitter, R.; Pal, V.; Bretenaker, F. (2022-05-29)
    The dynamical behavior of a one-dimensional ring array of lasers generated in a class-A degenerate cavity semiconductor laser is numerically investigated. The class-A behavior of the laser is obtained by considering a ...
  • Fair sampling with a highly parallel laser simulator 
    Pal, V.; Mahler, S.; Friesem, A. A.; Davidson, N. (2021-12-01)
    We present efficient fair sampling of ground-state manifold of XY spin Hamiltonian based on dissipatively coupled lasers that includes a massive parallelism. Our simulator could potentially be exploited to address various ...
  • Flat-top laser beams over an extended range 
    Reddy, A. N. K.; Pal, V.; Mahler, S.; Friesem, A. A.; Davidson, N. (2021-08-06)
    Designs based on single diffractive-optical-elements for obtaining flat-top laser intensity distributions that remain constant over a long range during free-space propagation are presented. Flat-top beams with different ...
  • Generating asymmetric aberration laser beams with controlled intensity distribution 
    Singh, S.; Dev, V.; Pal, V. (2022-11-18)
    We present generation of asymmetric aberration laser beams (aALBs) with controlled intensity distribution, using a diffractive optical element (DOE) involving phase asymmetry. The asymmetry in the phase distribution is ...
  • Generating autofocused aberration laser beams with different spectral performance 
    Reddy, A.N.K.; Khonina, S.N.; Pal, V. (2020-12-22)
    We present a flexible approach for generating autofocused aberration laser beams (ALBs) of different wavelengths based on the diffractive optical element (DOE) design with distinct phase transmittance that has radial ...
  • Generating high-energy densities by sidelobe suppression in the far-field of phase-locked lasers 
    Dav, V.; Reddy, A.N.K.; Pal, V. (2022-10-26)
    Laser beams with high-energy densities are desired for both fundamental research and applied applications. We present a numerical study on the generation of high-energy densities by sidelobe suppression in the ...
  • High-power discrete vortex with phase locked lasers 
    Dav, V.; Pal, V. (2022-09-22)
    We present the generation of high-power discrete vortices formed by phase locking one-dimensional ring array of lasers in a degenerate cavity. We have observed that the divergence of discrete vortices is independent of ...
  • High-resolution digital spatial control of a highly multimode laser 
    Tradonsky, C.; Mahler, S.; Cai, G.; Pal, V.; Chriki, R.; Friesem, A. A.; Davidson, N. (2021-07-19)
    We developed a rapid and efficient method for generating laser outputs with arbitrary shaped distributions and properties that are needed for a variety of applications. It is based on simultaneously controlling the intensity, ...
  • Phase locking of lasers with Gaussian coupling 
    Reddy, A.N.K.; Mahler, S.; Goldring, A.; Pal, V.; Friesem, A.A.; Davidson, N. (2022-06-23)
    A unique approach for steady in-phase locking of lasers in an array, regardless of the array geometry, position, orientation, period or size, is presented. The approach relies on the insertion of an intra-cavity Gaussian ...
  • Rapid laser solver for the phase retrieval problem 
    Tradonsky, C.; Gershenzon, I.; Pal, V.; Chriki, R.; Friesem, A.A.; Raz, O.; Davidson, N. (2019-11-29)
    Tailored physical systems were recently exploited to rapidly solve hard computational challenges, such as spin simulators, combinatorial optimization, and focusing through scattering media. Here, we address the phase retrieval ...
  • Robust design of diffractive optical elements for forming flat-top beams with extended depth of focus 
    Reddy, A. N. K.; Pal, V. (2021-08-13)
    Robust designs of single-difractive optical elements (DOEs) on forming fat-top beams with extended depth of focus for diferent wavelengths and beam sizes are presented. The design process includes spatial Fourier fltering ...