High efficiency volume Bragg gratings for 2-3 micron spectral region (Conference Presentation)

Volume Bragg Gratings (VBGs) in photo-thermo-refractive glass demonstrate outstanding properties in visible and near IR spectral region providing extremely high spectral and angular selectivity, and diffraction efficiency exceeding 99%. This paper reviews recent VBG technology improvements as well as various results on VBG applications that can lead to major improvements of fiber, solid-state, and diode laser system performance in 2 3 micron spectral range.