Single-shot Spectrometers and Realtime THz digitizers, using Diversity Electro-Optic Sampling (DEOS) - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Single-shot Spectrometers and Realtime THz digitizers, using Diversity Electro-Optic Sampling (DEOS)

C. Szwaj
  • Fonction : Auteur
C. Evain
  • Fonction : Auteur
B. Steffen
  • Fonction : Auteur
C. Gerth
  • Fonction : Auteur
M. K. Czwalinna
  • Fonction : Auteur
B. Jalali
  • Fonction : Auteur
S. Bielawski
  • Fonction : Auteur

Résumé

Recording a THz waveform in single-shot is needed in Time-Domain Spectroscopy (TDS) and the study of accelerator physics. However, existing methods suffer from fundamental trade-offs in bandwidth, resolution, and sensitivity, which have limited their applications so far. We present here a new method for single-shot Time-Domain Spectrometers - or equivalently terahertz Analog to Digital Converters (ADC) - that can be operated with unprecedented temporal resolution and bandwidths. The core of the method consists of a novel association of classical THz electro-optic detection, together with the theoretical concept known as diversity, borrowed from photonic time-stretch. We present prototypes and tests of two single-shot systems: a TDS system capable of single-shot THz spectroscopy with record spectral resolution, and a THz recorder that records the electric field created by 200 fs long relativistic electron bunches at European XFEL.
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Dates et versions

hal-04537223 , version 1 (08-04-2024)

Identifiants

Citer

E. Roussel, C. Szwaj, C. Evain, B. Steffen, C. Gerth, et al.. Single-shot Spectrometers and Realtime THz digitizers, using Diversity Electro-Optic Sampling (DEOS). 2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ, 2023, Montreal, Canada. ⟨10.1109/IRMMW-THz57677.2023.10298906⟩. ⟨hal-04537223⟩
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