Used J.A. WOOLLAM IR-VASE Mark II #293832127 for sale

J.A. WOOLLAM IR-VASE Mark II is a highly advanced and versatile spectroscopic ellipsometer designed for precise and accurate thin film characterization in the infrared spectral region. Ellipsometry is a powerful and non-destructive optical technique used to measure the optical properties of thin films, such as thickness, refractive index, and extinction coefficient, with high sensitivity and resolution. IR-VASE Mark II was developed by J.A. WOOLLAM Co., Inc., a leading manufacturer of spectroscopic ellipsometers and thin film metrology instruments. J.A. WOOLLAM IR-VASE Mark II is equipped with a broadband infrared light source that covers a wide spectral range extending from the near-infrared (NIR) to the mid-infrared (MIR) region, typically from 1 to 10 microns. This extended spectral coverage enables the accurate characterization of a wide range of materials and thin films, including semiconductor films, dielectric films, organic films, and optical coatings, among others. The ability to probe materials in the infrared region is crucial for applications in areas such as materials science, semiconductor technology, photovoltaics, and optical coatings. One of the key features of IR-VASE Mark II is its high spectral resolution and accuracy, which allows for precise measurement of the complex optical properties of thin films. The instrument utilizes the principles of ellipsometry, where the change in polarization state of light upon reflection from a sample surface is analyzed to extract information about the optical properties of the material. By measuring the ellipsometric parameters (Ψ and Δ) at multiple wavelengths across the infrared spectrum, J.A. WOOLLAM IR-VASE Mark II can determine the thickness, refractive index, and absorption coefficient of thin films with high precision. IR-VASE Mark II is equipped with a motorized stage and variable angle of incidence capabilities, allowing for measurements at multiple angles and regions of the sample surface. This feature is particularly useful for studying anisotropic and multi-layered thin film structures, where the optical properties may vary with incident angle or film composition. Additionally, the instrument can perform mapping measurements over large areas of the sample surface to generate spatially resolved optical property maps with high resolution. J.A. WOOLLAM IR-VASE Mark II is controlled by advanced spectroscopic ellipsometry software, which enables users to easily set up experiments, acquire data, and analyze results in real-time. The software provides various modeling options to fit measured data to theoretical models, such as the Tauc-Lorentz dispersion model or the Cauchy model, to extract accurate optical constants of the thin films. Users can also create custom models and simulate ellipsometric data to optimize measurement conditions and interpret complex optical behaviors. Overall, IR-VASE Mark II ellipsometer is a cutting-edge instrument for infrared spectroscopic ellipsometry, offering high-performance capabilities for thin film characterization in a wide range of research and industrial applications. Its advanced design, spectral coverage, and software features make it an indispensable tool for scientists and engineers working in the field of thin film optics and materials science.