TY - GEN
T1 - Temporal Characterization of Sub-3-fs, μJ-level Deep UV Pulses Generated by Resonant Dispersive Wave Emission
AU - Pini, Marta
AU - Cappenberg, Federico
AU - Colaizzi, Lorenzo
AU - Vismarra, Federico
AU - Lucchini, Matteo
AU - Crego, Aurora
AU - Brahms, Christian
AU - Travers, John
AU - Varillas, Rocío Borrego
AU - Reduzzi, Maurizio
AU - Nisoli, Mauro
PY - 2023/9/4
Y1 - 2023/9/4
N2 - The generation of few-femtoseconds laser pulses in the Deep Ultraviolet (DUV) spectral region (200–300 nm) is crucial for the investigation of ultrafast electronic dynamics in several classes of molecules. As prominent examples, both DNA nucleobases [1], as well as donor-acceptor systems, relevant for optoelectronic applications, readily absorb in this spectral range. In this context, Resonant Dispersive Wave (RDW) emission in gas-filled Hollow Core Fibers (HCF) is a novel and efficient way to generate μJ -level DUV few-fs pulses, continuously tuneable with gas pressure [2], with a consequent advantage in the proper matching of specific molecular excitations. The ultrashort time duration of such pulses is crucial for their application in high temporal resolution pump-probe spectroscopy experiments, but their large bandwidth in a notoriously challenging spectral region also renders their temporal characterization particularly demanding. Here, we report on the direct temporal characterization of few-cycle DUV pulses generated by RDW emission in a Neon-filled HCF, demonstrating near transform-limited pulses in the DUV.
AB - The generation of few-femtoseconds laser pulses in the Deep Ultraviolet (DUV) spectral region (200–300 nm) is crucial for the investigation of ultrafast electronic dynamics in several classes of molecules. As prominent examples, both DNA nucleobases [1], as well as donor-acceptor systems, relevant for optoelectronic applications, readily absorb in this spectral range. In this context, Resonant Dispersive Wave (RDW) emission in gas-filled Hollow Core Fibers (HCF) is a novel and efficient way to generate μJ -level DUV few-fs pulses, continuously tuneable with gas pressure [2], with a consequent advantage in the proper matching of specific molecular excitations. The ultrashort time duration of such pulses is crucial for their application in high temporal resolution pump-probe spectroscopy experiments, but their large bandwidth in a notoriously challenging spectral region also renders their temporal characterization particularly demanding. Here, we report on the direct temporal characterization of few-cycle DUV pulses generated by RDW emission in a Neon-filled HCF, demonstrating near transform-limited pulses in the DUV.
UR - http://www.scopus.com/inward/record.url?scp=85175710497&partnerID=8YFLogxK
U2 - 10.1109/cleo/europe-eqec57999.2023.10232505
DO - 10.1109/cleo/europe-eqec57999.2023.10232505
M3 - Conference contribution
BT - 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
PB - IEEE
ER -