Quantum well laser

A quantum well laser is a type of laser that uses a very thin layer of semiconductor material, called a quantum well, to produce light more efficiently. In this structure, electrons and holes (positive charge carriers) are confined to a tiny space, which enhances the light emission process. This design allows for lasers that are smaller, more efficient, and can operate at specific wavelengths suited for various applications like telecommunications and medical devices. Essentially, the quantum well acts as a highly controlled environment that improves how the laser generates coherent light.