We use a conventional linear Airy beam to prepare a nonlinear Airy beam via four-wave mixing (FWM) and six-wave mixing (SWM) processes in an atomic vapor. We find that its ballistic trajectory is a result of the competition between the transverse self-acceleration and nonlinear phase shift, and the intensity of Airy beam's sub lobes or main lobe is suppressed due to destructive interference of the FWM and SWM processes. By controlling the nonlinear overlap area of the linear Airy beam and two Gaussian beams, we find that the Airy beam's profile varies from one-dimensional (1D) to two-dimensional (2D). The profile evolution process can be applied to create a new (to our knowledge) type of nonlinear filter. In addition, we also observe the Airy beam's pattern in momentum space with electromagnetically induced transparency (EIT) in an atomic vapor. Our research results open up new possibilities for manipulating Airy beams that cannot be achieved with a conventional Airy beam.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.393566 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-Impact Polystyrene Structured Light Components for Terahertz Imaging Applications.
Sensors (Basel)
December 2024
Department of Optoelectronics, Center for Physical Sciences and Technology (FTMC), Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania.
Terahertz frequency range imaging has become more and more attractive for a wide range of practical applications; however, further component optimization is still required. The presented research introduces 3D-printed high-impact polystyrene (HIPS) beam-shaping components for the terahertz range. Gaussian, Bessel, and Airy beam-shaping structures are fabricated, and different combinations are employed to evaluate imaging system performance.
View Article and Find Full Text PDFA Feasibility Study on 3-D Imaging of Intrahepatic Bile Ducts in Patients with Biliary Atresia Using Airy Beam Excited Two-Photon Microscopy.
Appl Biochem Biotechnol
December 2024
Department of General Surgery, Tianjin Children's Hospital, Beichen District, Longyan Road 238, Tianjin, 300134, China.
Article Synopsis
- This study aimed to use a two-photon microscope excitation Airy beam to create detailed 3D images of intrahepatic bile ducts in mice with bile duct ligation (BDL) and human patients with biliary atresia (BA).
- Ten BDL mice showed symptoms like jaundice and weight loss, with liver tissues sampled after 10 days, while 16 BA patients underwent either liver transplantation or Kasai portoenterostomy (KPE).
- The imaging revealed significant bile duct widening and hyperplasia in BDL mice and disorganized bile ducts in BA patients, particularly those who had liver transplants.
This work presents the generation of an Airy beam by a leaky-wave structure (LWS) designed from a substrate-integrated waveguide (SIW) with dimension-varying slots. The Airy beam is radiated by judiciously designing the length of the slots to modulate the phase distribution. Compared to Airy beams generated by phased array antennas or metasurfaces, no complex feeding network associated with phase shifters and no space-wave illumination is required, thus allowing one to reach a low-profile structure.
View Article and Find Full Text PDFIn this paper, the dynamics of the circular Airy beam (CAB) in the spatial fractional nonlinear Schrödinger equation (FNLSE) optical system are investigated. The propagation characteristics of CABs modulated by the quadratic phase modulation (QPM) in a Kerr (cubic) nonlinear medium under power function diffractive modulation modes and parabolic potentials are numerically simulated by using a step-by-step Fourier method. Specifically, the threshold for CABs to form solitons in the Kerr medium is controlled by the Lévy index and the QPM coefficient.
View Article and Find Full Text PDFElectron Airy beams and electron vortex beams are commonly generated using phase masks that imprint a transverse modulation on the particle wave function. Plasmons sustained by nanostructured conductors facilitate substantial interactions with free electrons, enabling considerable transverse modulation of the electron wave function. Consequently, electron Airy and vortex beams can also be produced through interactions between electrons and structured plasmonic fields.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!