Control of vortex orientation of ultrashort optical pulses using a spatial chirp
Miguel A. Porras, Spencer W. Jolly
Abstract
Introducing a spatial chirp into a pulse with a longitudinal vortex, such as a standard pulsed Laguerre-Gauss beam, results in a vortex pulse with an arbitrary orientation of the phase line singularity between longitudinal and transverse, depending on the amount of chirp. Analytical expressions are given for such pulses with arbitrary topological charge valid at any propagation distance.
Topics & Concepts
OpticsOptical vortexPhysicsChirpVortexPulse (music)Transverse planeTopological quantum numberSpatial light modulatorPulse shapingPhase (matter)Multiphoton intrapulse interference phase scanBandwidth-limited pulseBeam (structure)Ultrashort pulseLaserQuantum mechanicsDetectorStructural engineeringEngineeringThermodynamicsOrbital Angular Momentum in OpticsLaser-Matter Interactions and ApplicationsOptical Polarization and Ellipsometry