May 2021 – TOPTICA external cavity diode laser DL Pro

The tunable lasers (Toptica external cavity diode laser) is used for resonant excitation of point defects in silicon carbide. The linewidth of the individual defect structure can be accurately determined by such a strong tunable light source. Such defects are strong candidates for single photon emitters being used in quantum communication. However, the local environment leads to variation of the individual transition energies. Quantum cooperative behaviour finally is aimed by individual “tuning” of such defects.