دورية أكاديمية
Broadband pump-probe spectroscopy at 20-MHz modulation frequency
| العنوان: | Broadband pump-probe spectroscopy at 20-MHz modulation frequency |
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| المؤلفون: | PREDA, FABRIZIO, KUMAR, VIKAS, CRISAFI, FRANCESCO, CERULLO, GIULIO NICOLA, POLLI, DARIO, Figueroa Del Valle, Diana Gisell |
| المساهمون: | Preda, Fabrizio, Kumar, Vika, Crisafi, Francesco, Figueroa Del Valle, Diana Gisell, Cerullo, GIULIO NICOLA, Polli, Dario |
| سنة النشر: | 2016 |
| المجموعة: | RE.PUBLIC@POLIMI - Research Publications at Politecnico di Milano |
| مصطلحات موضوعية: | Atomic and Molecular Physics, and Optics, Spectroscopy, time-resolved, Fourier transform, ultrafast, Spectrometers and spectroscopic instrumentation |
| الوصف: | We introduce an innovative high-sensitivity broadband pump-probe spectroscopy system, based on Fourier-transform detection, operating at 20-MHz modulation frequency. A common-mode interferometer employing birefringent wedges creates two phase-locked delayed replicas of the broadband probe pulse, interfering at a single photodetector. A single-channel lock-in amplifier demodulates the interferogram, whose Fourier transform provides the differential transmission spectrum. Our approach combines broad spectral coverage with high sensitivity, due to high-frequency modulation and detection. We demonstrate its performances by measuring two-dimensional differential transmission maps of a carbon nanotubes sample, simultaneously acquiring the signal over the entire 950-1350 nm range with 2.7·10-6 rms noise over 1.5 s integration time. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/wos/WOS:000379667800019; volume:41; issue:13; firstpage:2970; lastpage:2973; numberofpages:4; journal:OPTICS LETTERS; http://hdl.handle.net/11311/999186Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84978886871; https://www.osapublishing.org/DirectPDFAccess/2FA0B364-E904-D317-88A4D9FB4410BC4C_345006/ol-41-13-2970.pdf?da=1&id=345006&seq=0&mobile=noTest |
| DOI: | 10.1364/OL.41.002970 |
| الإتاحة: | https://doi.org/10.1364/OL.41.002970Test http://hdl.handle.net/11311/999186Test https://www.osapublishing.org/DirectPDFAccess/2FA0B364-E904-D317-88A4D9FB4410BC4C_345006/ol-41-13-2970.pdf?da=1&id=345006&seq=0&mobile=noTest |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.AB60240F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1364/OL.41.002970 |
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