Directional THz generation in hot Rb vapor excited to a Rydberg state.

  title={Directional THz generation in hot Rb vapor excited to a Rydberg state.},
  author={Mark Lam and Sambit Bikas Pal and Thibault Vogt and M. Kiffner and Wenhui Li},
  journal={Optics letters},
  volume={46 5},
We optically excite 85Rb atoms in a heated vapor cell to a low-lying Rydberg state 10D5/2 and observe directional terahertz (THz) beams at 3.3 THz and 7.8 THz. These THz fields are generated by amplified spontaneous emission from the 10D5/2 state to the 11P3/2 and 8F7/2 states, respectively. In addition, we observe ultraviolet (UV) light produced by four-wave mixing of optical pump lasers and the 3.3 THz field. We characterize the generated THz power over the detuning and power of pump lasers… Expand
3 Citations

Figures and Tables from this paper

Collimated ultraviolet light generated by four-wave mixing process in Cs vapor
  • Baodong Gai, Shu Hu, Junzhi Chu, Pengyuan Wang, Xianglong Cai, Jingwei Guo
  • Materials Science
  • OSA Continuum
  • 2021
Collimated ultraviolet (UV) light is generated via four-wave mixing (FWM) in cesium vapor by continuously tuning the wavelength of the pump laser. Terahertz (THz) Stokes light is generated by theExpand
Homodyne detection of a two-photon resonance assisted by cooperative emission
Using a transient regime approach, we explore atomic two-photon spectroscopy with self-aligned homodyne interferometry in the Λ-system. The two light sources at the origin of the interference, areExpand
Gouy phase-matched angular and radial mode conversion in four-wave mixing
We investigate the conversion between transverse mode structures in four-wave mixing in a heated rubidium vapour. While angular momentum conservation in this nonlinear process dictates the selectionExpand


Many graphics and vision problems can be expressed as non-linear least squares optimizations of objective functions over visual data, such as images and meshes. The mathematical descriptions of theseExpand
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variablesExpand
Optics letters 44
  • 2931
  • 2019
  • Radiat. Transf 258, 107351
  • 2021
Terahertz emitting and four wave mixing details in 6P3/2→11DJ pumped cesium vapor
Abstract Terahertz emitting and FWM (Four wave mixing) processes in 6P3/2→11DJ near-resonating pumped cesium vapor are studied in this work. Using a nanosecond 550 nm pump laser, collimated frequencyExpand
Advanced Optical Materials 8
  • 19900681
  • 2020
B 53
  • 034001
  • 2020
Full-Field Terahertz Imaging at Kilohertz Frame Rates Using Atomic Vapor
There is much interest in employing terahertz (THz) radiation across a range of imaging applications, but so far, technologies have struggled to achieve the necessary frame rates. Here, weExpand
  • Rev. X 10, 011027
  • 2020
Assessment of Rydberg atoms for wideband electric field sensing
Rydberg atoms have attracted significant interest recently as electric field sensors. In order to assess potential applications, detailed understanding of relevant figures of merit is necessary,Expand