Foreword: The Origin of Quantum Wells and the Quantum Well Laser. Optical Gain in III-V Bulk and Quantum Well Semiconductors. Intraband Relaxation Effect on Optical Spectra. Multiquantum Well Lasers: Threshold Considerations. Ultra-Low Threshold Quantum Well Lasers. Dynamics of Quantum Well Lasers. Single Quantum Well Ingaasp and Algaas Lasers: A Study of Some Peculiarities. Valence Band Engineering in Quantum Well Lasers. Strained Layer Quantum Well Heterostructure Lasers. Algainp Quantum Well Lasers. Quantum Wire Semiconductor Lasers. Chapter References. Index.