Introduction to the Issue on Progress in Solid-State, Fiber, and Tunable Sources

The 42 papers in this special issue are focused on progress in solid-state, fiber, and tunable sources. The issue is dedicated to the memory of Theodore H. Maiman, who kicked off the rapid growth of solid-state laser development in 1960. The papers are organized into six subject areas: power scaling strategies; fiber lasers and amplifiers; thin-disk lasers; planar waveguide and thin slab lasers; tunable sources and nonlinear frequency conversion; and progress in laser materials.