Transient nuclear inversion by X-Ray Free Electron Laser in a tapered x-ray waveguid
arXiv:2104.09624 · doi:10.1103/PhysRevResearch.4.L032007
Abstract
By restricting the spatial energy transmission of an electromagnetic wave, dielectric waveguides transmit light over long distances at sustained intensity. Waveguides have been used in the microwave and optical range to maintain strong signal intensities in connection with lasers, but guiding of intense short-wavelength radiation such as x-rays has proven more cumbersome. Here we investigate theoretically how tapered x-ray waveguides can focus and guide radiation from x-ray free electron lasers. Elliptical waveguides using a cladding material with high atomic number such as platinum can maintain an x-ray intensity up to three orders of magnitude larger than in free space. This feature can be used to significantly enhance resonant interactions of x-rays, for instance driving nuclear transitions up to transient nuclear population inversion. This could be the first breakthrough in nuclear state population control. Our results anticipate the important role of tapered x-ray waveguides in the emerging field of x-ray quantum optics with nuclear transitions.
arXiv comment19 pages, 5 figures, and 1 table
References in corpus (17)
- Coherent Control of the Waveforms of Recoilless Gamma-Photons
- Nuclear quantum optics with x-ray laser pulses
- Vacuum-assisted generation and control of atomic coherences at x-ray energies
- Interferometric phase detection at x-ray energies via Fano resonance control
- Tunable sub-luminal propagation of narrowband x-ray pulses
- Electric dipole-forbidden nuclear transitions driven by super-intense laser fields
- Coherent storage and phase modulation of single hard x-ray photons using nuclear excitons
- Dominant Secondary Nuclear Photoexcitation with the X-ray Free Electron Laser
- Nuclear coherent population transfer with x-ray laser pulses
- Tailoring laser-generated plasmas for efficient nuclear excitation by electron capture
- A three-beam setup for coherently controlling nuclear state population
- Output coupling from x-ray free-electron laser cavities with intracavity beam splitters
- Field control of single x-ray photons in nuclear forward scattering
- High brightness fully coherent X-ray amplifier seeded by a free-electron laser oscillator
- Generation of short hard X-ray pulses of tailored duration using a Mössbauer source
- Transition between Amplified Spontaneous Emission and Superfluorescence in a longitudinally pumped medium by an X-ray free electron laser pulse
- Inducing and detecting collective population inversions of Mössbauer nuclei
Cited by in corpus (7)
- Quantum Nanophotonics with Energetic Particles:X-rays and Free Electrons
- Waveguide QED with Moessbauer Nuclei
- Towards nonlinear optics with Mössbauer nuclei using x-ray cavities
- Time-Delayed Magnetic Control and Narrowing of X-Ray frequency Spectra in Two-Target Nuclear Forward Scattering
- High-fidelity Nuclear Coherent Population Transfer via the Mixed-State Inverse Engineering
- Excitation of narrow x-ray transitions in thin-film cavities by focused pulses
- Highly efficient nuclear population transfer through physics-informed neural networks