Picosecond optical parametric generator and amplifier for large temperature-jump

An optical parametric generator and amplifier producing 15 ps pulses at wavelengths tunable around 2 μm, with energies up to 15 mJ/pulse, has been realized and characterized. The output wavelength is chosen to match a vibrational combination band of water. By measuring the induced birefringence chan...

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Veröffentlicht in:Optics express 2014-12, Vol.22 (24), p.30047-30052
Hauptverfasser: Citroni, Margherita, Fanetti, Samuele, Guigue, Bastien, Bartolini, Paolo, Taschin, Andrea, Lapini, Andrea, Foggi, Paolo, Bini, Roberto
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Sprache:eng
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Zusammenfassung:An optical parametric generator and amplifier producing 15 ps pulses at wavelengths tunable around 2 μm, with energies up to 15 mJ/pulse, has been realized and characterized. The output wavelength is chosen to match a vibrational combination band of water. By measuring the induced birefringence changes we prove that a single pulse is able to completely melt samples of ice in the 10⁻⁶ cm³ volume range, both at room pressure (263 K) and at high pressure (298 K, 1 GPa) in a sapphire anvil cell. This source opens the possibility of studying melting and freezing processes by spectroscopic probes in water or water solutions in a wide range of conditions as found in natural environments.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.22.030047