Hybrid fabrication of single frequency semiconductor lasers

While simple Fabry-Perot (F-P) semiconductor lasers are readily available on the market, singlemode lasers are produced only in limited spectral intervals, mainly of interest to optical communications. A hybridisation scheme has been devised that, given a suitable F-P gain medium, enables the fabrication of small, mechanically robust single frequency lasers in a wide spectral range, limited only by the transparency of the SiON material.