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In this article, we review the current status of Raman spectroscopy in orthorhombic black phosphorus (BP) (for simplicity, henceforth, referred to as BP). BP is a layered semiconductor crystal that recently regained interest because it can be exfoliated down to the single layer, thus exhibiting 2‐D properties. First, we briefly review the crystalline structure and the phonon dispersion relations in...
The insertion of three continuous-wave optical frequencies in a low-dispersion optical fibre resulted in the generation of a high-repetition-rate train of ultra-short pulses and its simultaneous wavelength conversion. Two of the frequencies were spaced by ∼0.17THz and multi-wave mixing generated a frequency comb to which is associated a train of 1.6ps pulses. Wave-mixing between the generated comb...
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