REO, manufacturer of opto-mechanical assemblies, optics and ultra accurate thin film coatings for the infrared, visible and ultraviolet spectrums, has released a new line of graded reflectivity mirrors.
The new range mirrors allow accurate spatial shaping of both phase and intensity properties of laser beams. The phase and/or reflectivity effects in the mirrors change radially throughout the optical surface. REO can manufacture different shapes of graded reflectivity mirrors, including intricate and non-rotationally symmetric shapes wherein the reflectivity decreases or increases continuously throughout the component.
The company provides graded reflectivity mirrors on various substrate materials such as Si, ZnS, ZnSe, numerous optical glasses, fused silica for operation across the spectral range between 266 nm and 5 µm. The company produces these mirrors with a diameter range between 6 and 127 mm and reflectivity pattern deviation range of nearly 1 mm.
REO employs ion beam sputtering coating technology for the production of graded reflectivity mirrors that deliver mechanical resilience, environmental durability, spectral constancy and high damage threshold. These optical products are ideal for intracavity laser applications.
The graded reflectivity mirrors are widely used in unstable resonator lasers as cavity optics. The utilization of a super-Gaussian or second order Gaussian reflectivity profile enables a flawless far field output beam profile and extraction of optimum power from the resonator.
Source: http://www.reoinc.com