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800-nm pumped BIBO OPAs using Type-I and Type-II phase-matching are investigated and compared for achieving sub-50-fs pulses in the NIR. The OPAs achieve their shortest pulse durations of 19.8fs and 41.3fs, respectively, at 1.8μm.
A highly efficient 355nm Nd:YAG laser is developed in an intra-cavity triple resonance setup. By using novel harmonic configurations, we have eliminated the requirement of linear-polarization on the fundamental laser and its consequent power loss.
We report herein the preparation, the electrochemical, the absorption and the emission properties of new heteroleptic bisterpyridine ruthenium complexes composed of a terpyridine functionalized on the 4′ position by a thienyl phosphonic acid. The complexes were tested in TiO 2 dye-sensitized solar cells and were investigated by ultrafast transient IR spectroscopy on TiO 2 and SnO ...
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