Abstract
In this invited paper, we will first discuss the recent research progress regarding silicon-on-insulator (SOI) Raman wavelength converters, the working principle of which is based on the four-wave mixing process of coherent anti-Stokes Raman scattering (CARS). Next, we will present our research results on other aspects of CARS in SOI waveguides. First, starting from the basic formalism for CARS we will show that, in contrast to what most scientists believe, CARS exchanges energy with the Raman medium in which it takes place and is even able to extract energy (i.e. extract phonons) from it. Furthermore, we will introduce a novel approach to reduce the heat dissipation in Raman lasers due to the quantum defect between pump and lasing photons, and we will numerically demonstrate that with this CARS-based heat mitigation technique the quantum-defect heating in SOI waveguide Raman lasers could be reduced with as much as 35%.
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