Book excerpt: The author describes his own research in the field, assesses recent work by others, and provides coverage of the principles and theory of VCSELs as well as their design and operation. Chapters cover the theory of dielectric reflectors and VCSEL cavities; gain calculations for strained InGaAs and GaAs quantum wells; materials growth and device fabrication; resistance considerations for Bragg reflectors; two case studies and analysis of experimental data; and several related issues. Little prior knowledge of laser devices is necessary, though a background in solid-state physics is required. For students of optoelectronics and laser physics and researchers concerned with the development of VCSELs. Annotation copyright by Book News, Inc., Portland, OR