The Nonlinear Crystal Experts Blog
Scholarly articles authored by scientific and engineering experts focused on laser reliability, performance, laser-induced-damage-threshold (LIDT), and deep UV applications in fields such as aerospace and quantum technologies brought to your inbox by the technical team and experts at GAMDAN Optics, Inc.
INTERFEROMETRY - FRINGES AND PHASES
Before light sources with considerable coherence length were available (think lasers), opticians formed fringe patterns using a test plate, also known as an optical flat. Spherical test plates also exist, to check the surface of lenses, or curved mirrors. These test plates could be placed in close proximity to each other, so common light sources could be used.