Nano–dispersion–scan: measurement of sub-7-fs laser pulses using second-harmonic nanoparticles
| Autor: | Oscar Pérez-Benito, Rosa Weigand |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Spectrometer Scattering business.industry Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Barium borate Atomic and Molecular Physics and Optics Spectral line law.invention 010309 optics chemistry.chemical_compound Optics chemistry law 0103 physical sciences Dispersion (optics) Harmonic 0210 nano-technology business Refractive index |
| Zdroj: | Optics Letters. 44:4921 |
| ISSN: | 1539-4794 0146-9592 |
| Popis: | We demonstrate the measurement and retrieval of sub-7-fs laser pulses from a broadband Ti:Sa oscillator using ensembles of commercially available second-harmonic nanoparticles (NPs) and dispersion scan (d-scan). Scattering adds an incoherent component to the d-scan trace, and our retrieval procedure allows for correctly weighting the coherent and incoherent contributions to the trace. Comparison with a thin crystal [beta barium borate (BBO)] gave consistent pulse durations (6.56±0.03 fs for BBO and 6.5±0.1 fs for the NPs). These results pave the way to using ensembles of NPs for the measurement of ultrashort light pulses with ultra-broadband spectra at room temperature with standard spectrometers, in any spectral range. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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