Phase matching of high harmonic generation in the soft and hard X-ray regions of the spectrum

• URL: http://arxiv.org/abs/2404.01325v1
• Date: Thu, 28 Mar 2024 18:40:41 GMT
• Title: Phase matching of high harmonic generation in the soft and hard X-ray regions of the spectrum
• Authors: Tenio Popmintchev, Ming-Chang Chen, Alon Bahabad, Michael Gerrity, Pavel Sidorenko, Oren Cohen, Ivan P. Christov, Margaret M. Murnane, Henry C. Kapteyn,
• Abstract summary: We show how bright, fully coherent, hard x-ray beams can be generated through nonlinear upconversion of femtosecond laser light. We identify the dominant phase matching mechanism for long wavelength driving lasers. Scaling of the overall conversion efficiency is surprisingly favorable as the wavelength of the driving laser is increased.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We show how bright, fully coherent, hard x-ray beams can be generated through nonlinear upconversion of femtosecond laser light. By using longer-wavelength mid-infrared driving lasers of moderate peak intensity, full phase matching of the high harmonic generation process can extend, in theory, into the hard x-ray region of the spectrum. We identify the dominant phase matching mechanism for long wavelength driving lasers, and verify our predictions experimentally by demonstrating phase-matched up-conversion into the soft x-ray region of the spectrum around 330 eV using an extended, high-pressure, gas medium that is weakly ionized by the laser. Scaling of the overall conversion efficiency is surprisingly favorable as the wavelength of the driving laser is increased, making useful, fully coherent, multi-keV x-ray sources feasible. Finally, we show that the rapidly decreasing microscopic single-atom yield at longer driving wavelengths is compensated macroscopically by an increasing optimal pressure for phase matching and a rapidly decreasing reabsorption of the generated light at higher photon energies.

Related papers

• Attosecond spectroscopy using vacuum-ultraviolet pulses emitted from laser-driven semiconductors [0.03269212833895299]
  We photoionize Cesium atoms with the vacuum-ultraviolet (VUV) high-harmonics in the presence of a mid-infrared laser field. We observe strong oscillations of the photoelectron yield originating from the instantaneous polarization of the atoms by the laser field. This light source opens a new spectral window for attosecond spectroscopy.
  arXiv  Detail & Related papers  (2024-05-28T08:26:07Z)
• Attosecond Rabi Oscillations in High Harmonic Generation Resonantly Driven by Extreme Ultraviolet Laser Fields [36.37753021661126]
  High-order harmonic generation driven by intense extreme ultraviolet (EUV) fields merges quantum optics and attosecond science. We theoretically investigate ultrafast resonant dynamics during the interaction of He atoms with strong EUV pulses.
  arXiv  Detail & Related papers  (2024-04-05T12:17:40Z)
• Phase-Matching of High-Order Harmonics Driven by Mid- Infrared Light [0.0]
  We show that the phase-matching cutoff for harmonic generation in argon increases from 45 to 100 eV when the driving laser wavelength is increased from 0.8 to 1.3 micrometers. Theoretical calculations suggest that phase-matched high harmonic frequency upconversion driven by mid-infrared pulses could be extended to extremely high photon energies.
  arXiv  Detail & Related papers  (2024-03-28T18:27:43Z)
• Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers [27.071264214506108]
  High harmonic generation traditionally combines 100 near-infrared laser photons, to generate bright, phase matched, extreme ultraviolet beams. Here we show that by guiding a mid-second femto laser in a high pressure gas, ultrahigh harmonics can be generated up to orders > 5000.
  arXiv  Detail & Related papers  (2024-03-28T16:10:03Z)
• Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
  Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
  arXiv  Detail & Related papers  (2023-04-24T15:43:08Z)
• High-efficiency microwave-optical quantum transduction based on a cavity electro-optic superconducting system with long coherence time [52.77024349608834]
  Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors. We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities. We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
  arXiv  Detail & Related papers  (2022-06-30T17:57:37Z)
• Complete conversion between one and two photons in nonlinear waveguides with tailored dispersion [62.997667081978825]
  We show theoretically how to control coherent conversion between a narrow-band pump photon and broadband photon pairs in nonlinear optical waveguides. We reveal that complete deterministic conversion as well as pump-photon revival can be achieved at a finite propagation distance.
  arXiv  Detail & Related papers  (2021-10-06T23:49:44Z)
• Superradiance in dynamically modulated Tavis-Cumming model with spectral disorder [62.997667081978825]
  Superradiance is the enhanced emission of photons from quantum emitters collectively coupling to the same optical mode. We study the interplay between superradiance and spectral disorder in a dynamically modulated Tavis-Cummings model.
  arXiv  Detail & Related papers  (2021-08-18T21:29:32Z)
• Superradiant lasing in inhomogeneously broadened ensembles with spatially varying coupling [0.0]
  We study the power, linewidth and lineshifts of such a superradiant laser as a function of the inhomogeneous width of the ensemble. We present conditions on the atom numbers, the pump and coupling strengths required to reach the buildup of collective atomic coherence as well as scaling and limitations for the achievable laser linewidth.
  arXiv  Detail & Related papers  (2021-05-23T21:28:23Z)
• Quantum Langevin approach for superradiant nanolasers [58.720142291102135]
  A new approach for analytically solving quantum nonlinear Langevin equations is proposed and applied to calculations of spectra of superradiant lasers. We calculate lasing spectra for arbitrary pump rates and recover well-known results such as the pump dependence of the laser linewidth across the threshold region. We predict new sideband peaks in the spectrum of superradiant lasers with large relaxation oscillations as well as new nonlinear structures in the lasing spectra for weak pump rates.
  arXiv  Detail & Related papers  (2020-12-04T11:30:30Z)
• Position-controlled quantum emitters with reproducible emission wavelength in hexagonal boron nitride [45.39825093917047]
  Single photon emitters (SPEs) in low-dimensional layered materials have recently gained a large interest owing to the auspicious perspectives of integration and extreme miniaturization. Here, we evidence SPEs in high purity synthetic hexagonal boron nitride (hBN) that can be activated by an electron beam at chosen locations. Our findings constitute an essential step towards the realization of top-down integrated devices based on identical quantum emitters in 2D materials.
  arXiv  Detail & Related papers  (2020-11-24T17:20:19Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.