Temporal Characterization of a Supercontinuum at 500 kHz Repetition Rate Using Frequency Resolved Optical Switching

Haddad, Elissa; Longa, Adrien; Lassonde, Philippe; Leblanc, Adrien; Ibrahim, Heide; Légaré, François; Jargot, Gaetan

doi:10.1364/up.2022.w4a.37

Cited by 1 publication

(2 citation statements)

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“…A complete characterization of this supercontinuum has been presented in Ref. [24]. The bandwidth of interest is between 1600 nm and 1850 nm, and the SC has been optimized to be stable in this region.…”

Section: Optical Setupmentioning

confidence: 99%

“…A complete description of the FROSt optical setup can be found in [24], as well as the temporal characterization of the SC and OPA2 stage. We delay the depleted pump of the OPA3 to coincide both temporally and spatially with the beam we want to characterize (signal, idler or DFG) onto a Silicon (Si) plate of 0.5 mm, which acts as the pump for the FROSt.…”

Section: Duration Measurementmentioning

confidence: 99%

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Time-resolved ARPES with probe energy of 6.0 eV and tunable MIR pump at 250 kHz

Longa,

Parent,

frimpong

et al. 2024

Preprint

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In this paper, we present a laser source designed specifically for time- and angle-resolved photoemission (TR-ARPES) investigations of light-induced electron dynamics in quantum materials. Our laser source is based on an ytterbium-doped laser that seeds an optical parametric amplifier (OPA) followed by a difference frequency generation (DFG) stage. This configuration enables the generation of tunable near-infrared and mid-infrared laser pulses (1.5 to 8 μm - 0.82 to 0.15 eV) at 250 kHz of repetition rate, serving as the pump for TR-ARPES measurements. The remaining energy of the laser is used to generate the ultraviolet 6 eV probe pulses, which prompt the material to emit photoelectrons. We demonstrate the long-term stability of the source, as well as the characterization of the beam profiles and pulse durations. Additionally, we present preliminary TR-ARPES results obtained on Bi₂Te₃, a prototypical 3D topological insulator. This paper illustrates the capability of our laser source to probe electronic dynamics in quantum materials.

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Section: Optical Setupmentioning

confidence: 99%

Section: Duration Measurementmentioning

confidence: 99%