Visible pump–mid infrared pump–broadband probe: Development and characterization of a three-pulse setup for single-shot ultrafast spectroscopy at 50 kHz
| Autor: | Giacomo Jarc, Filippo Glerean, A. Marciniak, Giorgia Sparapassi, Matija Colja, Dario De Angelis, Daniele Fausti, Francesca Giusti, Gabriele Brajnik, Rudi Sergo, Giuseppe Cautero, Angela Montanaro, Sergio Carrato |
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| Přispěvatelé: | Montanaro, A., Giusti, F., Colja, M., Brajnik, G., Marciniak, A. M. A., Sergo, R., De Angelis, D., Glerean, F., Sparapassi, G., Jarc, G., Carrato, S., Cautero, G., Fausti, D. |
| Rok vydání: | 2020 |
| Předmět: |
Time delay and integration
Physics - Instrumentation and Detectors Materials science FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas ultrafast spectroscopy Superconductivity (cond-mat.supr-con) pump-probe experiments Optics Physics - Chemical Physics 0103 physical sciences Broadband Spectroscopy Instrumentation Chemical Physics (physics.chem-ph) 010302 applied physics business.industry Condensed Matter - Superconductivity Instrumentation and Detectors (physics.ins-det) 3. Good health Supercontinuum Wavelength pump-probe experiment business Sensitivity (electronics) Single crystal Ultrashort pulse Optics (physics.optics) Physics - Optics |
| Zdroj: | Review of Scientific Instruments |
| ISSN: | 1089-7623 0034-6748 |
| Popis: | We report here an experimental setup to perform three-pulse pump-probe measurements over a wide wavelength and temperature range. By combining two pump pulses in the visible (650-900 nm) and mid-IR (5-20 $\mu$m) range, with a broadband supercontinuum white-light probe, our apparatus enables both the combined selective excitation of different material degrees of freedom and a full time-dependent reconstruction of the non-equilibrium dielectric function of the sample. We describe here the optical setup, the cryogenic sample environment and the custom-made acquisition electronics capable of referenced single-pulse detection of broadband spectra at the maximum repetition rate of 50 kHz, achieving a sensitivity of the order of 10$^{-4}$ over an integration time of 1 s. We demonstrate the performance of the setup by reporting data on mid-IR pump, optical push and broadband probe in a single-crystal of Bi$_2$Sr$_2$Y$_{0.08}$Ca$_{0.92}$Cu$_2$O$_{8+\delta}$ across the superconducting and pseudogap phases. Comment: 12 pages, 7 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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