Programmable generation of counterrotating bicircular light pulses in the multi-terahertz frequency range

Abstract

The manipulation of solid states using intense infrared or terahertz light fields is a pivotal area in contemporary ultrafast photonics research. While conventional circular polarization has been well explored, the potential of counterrotating bicircular light remains widely underexplored, despite growing interest in theory. In the mid-infrared or multi-terahertz region, experimental challenges lie in difficulties in stabilizing the relative phase between two-color lights and the lack of available polarization elements. Here, we successfully generated phase-stable counterrotating bicircular light pulses in the 10-40 THz frequency range circumventing the above problems. Employing spectral broadening, polarization pulse shaping with a spatial light modulator, and intra-pulse difference frequency generation leveraging a distinctive angular-momentum selection rule within the nonlinear crystal, we achieved direct conversion from near-infrared pulses into the designed counterrotating bicircular multi-terahertz pulses. Use of the spatial light modulator enables programmable control over the shape, orientation, rotational symmetry, and helicity of the bicircular light field trajectory. This advancement provides a novel pathway for the programmable manipulation of light fields, and marks a significant step toward understanding and harnessing the impact of tailored light fields on matter, particularly in the context of topological semimetals.

19 pages, 3 figures

References in corpus (12)

• Photovoltaic Hall effect in graphene
• Light-induced emergent phenomena in 2D materials and topological materials
• Light-Induced Valleytronics in Pristine Graphene
• Lightwave-controlled band engineering in quantum materials
• Phononic Switching of Magnetization by the Ultrafast Barnett Effect
• Optical control of magnetization of micron-size domains in antiferromagnetic NiO single crystals
• Bicircular light tuning of magnetic symmetry and topology in Dirac semimetal Cd${}_3$As${}_2$
• Controlling Valley-Polarisation in Graphene via Tailored Light Pulses
• Photocurrent induced by a bicircular light drive in centrosymmetric systems
• Disentangling the Competing Mechanisms of Light-Induced Anomalous Hall Conductivity in Three-Dimensional Dirac Semimetal
• Observation of Terahertz Spin Hall Conductivity Spectrum in GaAs with Optical Spin Injection
• Anomalous Hall transport by optically injected isospin degree of freedom in Dirac semimetal thin film

Cited by in corpus (5)

• Controllable photocurrent generation in Dirac systems with two frequency drives
• Two-color laser control of photocurrent and high harmonics in graphene
• Triplons, triplon pairs and dynamical symmetries in laser-driven Shastry-Sutherland magnets
• Light-induced inverse spin Hall effect and field-induced circular photogalvanic effect in GaAs revealed by two-dimensional terahertz Fourier analysis
• Correction of broadband terahertz electro-optic sampling with GaSe crystals