Optical Metrology & Testing Laboratory

What Is Optical Analysis?

Optical analysis quantifies how materials and coatings interact with light across UV, visible, NIR, and mid‑IR bands. Our optical metrology and optical analysis services deliver decision‑ready data and models.

You get:

Thin-film thickness measurement with sub-nanometer precision (when conditions allow).
Wavelength-dependent optical constants and refractive index measurement with bandgap estimates (where applicable).
Spectral transmission and reflectance curves (specular and total/diffuse), plus absorbance and absorption coefficient.
Color measurement services on request.
Layer-stack performance versus design targets with fit quality and stated uncertainty.

Where it helps:

Coating Development: Validate dispersion models and tune deposition with quantitative residuals.
QA and Incoming Inspection: Transmittance and reflectance testing, and thickness versus acceptance thresholds; drift versus golden lots.
Design Verification: Compare measured spectra to transfer-matrix predictions; diagnose roughness, intermixing, porosity.
Process Control: Track run-to-run thickness and optical properties stability; set guard bands.
Device Correlation: Link optical properties testing results to efficiency, contrast, and uniformity in displays, sensors, photovoltaics, and optics.

We work across dielectrics, semiconductors, polymers, glasses, and metals, covering single films and complex multilayer stacks on planar or slightly curved optics, including textured and porous surfaces that require specialized modeling and measurement.

How It Works

We align methods to decision criteria and constrain models with multi-technique data. Results are reported with traceable uncertainties and pass or fail tables, which are hallmarks of defensible optical characterization services.
Define objectives
- Specify spectral range, angles or polarization, and tolerances.
- Establish acceptance criteria and in-use geometry.
Acquire complementary datasets
- Spectral Ellipsometry to constrain thickness and dispersion.
- UV-Vis-NIR for spectral transmission testing and reflectance, with an integrating sphere for total or diffuse on scattering samples.
- Optional surface or topography inputs (White Light Interferometry) to model roughness-induced scatter.
- Optional FT-IR for vibrational fingerprints and mid-IR optical properties of polymers and organics.
Model and validate results
- Industry-standard optical models and cross-checks to ensure reliable thickness, refractive index, and spectral results.
- Uncertainty reported with every deliverable.
Report decision-ready results
- Thickness and n or k versus wavelength with uncertainty.
- Spectral transmittance and reflectance curves, with optional color and haze metrics.
- Acceptance tables with spec thresholds and pass or fail, method notes, and process-tuning recommendations.

Optical analysis – scientists in laboratory using microscopes and spectroscopic instruments to measure optical properties and characterize material samples

Techniques Used in Optical Analysis

Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR)

Rapid, non-destructive chemical identification. Explore

The Value of Multiple Techniques for Resolving Materials Science Challenges

Optical Analysis

What Is Optical Analysis?

How It Works

Techniques Used in Optical Analysis

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