A highly efficient slab-coupled optical waveguide laser which includes an upper and lower waveguide region for guiding laser mode.
This technology is applicable to optical waveguide lasers and amplifiers which are used for materials processing, laser pumping, medical applications and direct direct energy applications.
Current slab-coupled optical waveguide lasers are inefficient. This inefficiency is due to etching within the quantum well active region which removes the possibility of lateral current spreading. This etching introduces defects that limit device reliability and operating time.
High Efficiency Slab Coupled Optical Waveguide Laser and Amplifiers features an improved design where the active region is placed within the interior region of the SCOWL waveguide, instead of at the edges. This allows for etching into the SCOWL waveguide that is required for defining a ridge waveguide. The required etch depth for the SCOWL operation in this improved design is selected such that the active region is unetched and therefore higher efficiency is achieved. This invention is a substantial improvement over previous SCOWL devices and also many other types of single-mode semiconductor lasers.
- Higher efficiency than current technologies
- More reliable than current technologies
- Increased power output
- Implementable with different material systems(already implemented in the InGaAs/AlGaAs/GaAs material system)