Spectroscopic Ellipsometer SE300BM

Spectroscopic Ellipsometer for Thin Film Thickness Measurement

Ellipsometry is a technique utilizing polarization state changes  after light beam reacts with probing samples. Not like reflectometer, spectroscopic ellipsometer parameters (Psi and Del) are always obtained at non normal incident angles. By varying incident angle. many more data sets can be obtained which wiil be helpful in refining model, reducing uncertainty and improving user's confidence on model's output. Therefore, variable angle ellipsometer is far more powerful  than fixed angle ellipsometers. There are two ways to change incident angles, manually or automatically. Ansgtrom Sun technologies Inc designed both angle adjustment models, manually adjusting agnle by moving arms at 5 degree interval following precisely preset slots(manual goniometer, SExxxBM, low cost version), and motorized precision goniometer with 0.001 degree resolution(SExxxBA). In addition, goniometers are engineeringed at vertical layout so samples could be placed horizontally, which is safer when handling samples. With reliable and enough raw data sets, many film properties, like film thickness, its optical constants, interface, porosity and even composition can be obtained through modeling. In this sense, advanced software is a must for high performance SE tools. We developed TFProbe 3.X version software for system setup. simulation, measurement, analysis, data management and 2D/3D graphics presentation. It is all-in-one.

SE300BM is relatively low cost tool among SE series. It covers visible to NIR range (370 to 1100nm) with manual goniometer for incident angle changes at 5 degree interval. This brings a combination of powerful tools with relative low cost, comparing with automatic goniometer configuration(SE300BA). Array based detecting setup gives user a fast measurement, just in seconds. When a mapping or real time in situ measurement is needed, this is the best choice among all SE models.  In the product photo, a 300mm motorized mapping stage is equipped. There are several other options available. Please fell free to contact us for any special needs. It's our goal to provide a tool, whatever it is standard configuration or it is customized,  to meet your application needs.

  • Easy to set up
  • Easy to operate with Window based software
  • Advanced optics design for best system performance
  • Adjustable VIS-NIR light source for broad band applications
  • Array based detector system to ensure fast measurement
  • Measure film thickness and Refractive Index up to 12 layers
  • Capable to be used for real time or in-line thickness, refractive index monitoring
  • System comes with comprehensive optical constants database and library
  • Advanced TFProbe 3.0 Software allows user to use either NK table, dispersion or effective media approximation (EMA) for each individual film.
  • Three different user level control: Engineer mode, system service mode and easy user mode
  • Flexible engineer mode for various recipe setup and optical model testing
  • Robust one click button (Turn-key) solution for quick and routine measurement
  • Configurable measurement parameters, user preference and easiness of operation
  • Fully automatic calibration and initialization for system
  • Precise sample alignment interface from sample signal directly, no external optics needed
  • Precise height and tilting adjustment
  • Apply to many different type of substrates with different thickness
  • Various options, accessories available for special configurations such as mapping stage, wavelength extension, focus spot etc.
  • 2D and 3D output graphics and user friendly data management interface
System Configuration:
  • Model: SE300BM
  • Detector: Detector Array
  • Light Source: Adjustable intensity Vis-NIR  Light Source
  • Incident Angle Change: Manual
  • Stage: Black Anodized Alumnium Sample holder for up to 200mm or 150x150mm samples
  • Software: TFProbe 3.3.x
  • Computer: Intel i3 processor
  • Monitor 22" Wide Screen LCD
  • Power: 110– 240 VAC /50-60Hz, 6 A
  • Warranty: One year labor and parts
  • Wavelength range: 370 to 1100 nm
  • Wavelength resolution: ~1 nm
  • Spot Size: 1 to 5 mm variable
  • Incident Angle Range: 0 to 90 degree
  • Incident Angle Change Resolution: 5 degree interval
  • Sample Size: up to 200 mm in diameter or 150mm square
  • Substrate Size: up to 20mm thick
  • Measurable thickness range*: 5 nm to 30 µm
  • Measurement Time: ~ 1s/Site
  • Accuracy*: better than 0.25%
  • Repeatability*: < 1 Å (1 sigma from 50 thickness readings for 1500 Å Thermal SiO2 on Si Wafer)
  • Photometry measurement for Reflection and/or Transmission Measurement
  • Micro spot for measuring small area
  • Automatic Goniometer for Incident angle changes
  • Mapping Stage (X-Y mode or Rho-Theta mode)
  • Heating /Cooling Stage
  • Vertical Sample Mounting Goniometer
  • Wavelength extension to further DUV or IR range
  • Scanning Monochromator Setup
  • Combined with MSP for patterned sample measurement with digital imaging functions
  • Semiconductor fabrication (PR, Oxide, Nitride..)
  • Liquid crystal display (ITO, PR, Cell gap…..)
  • Forensics, Biological films and materials
  • Inks, Mineralogy, Pigments, Toners
  • Pharmaceuticals, Medial Devices
  • Optical coatings, TiO2, SiO2, Ta2O5…..
  • Semiconductor compounds
  • Functional films in MEMS/MOEMS
  • Amorphous, nano and crystalline Si
  • Various TCO films (ITO, FTO, IZO, AZO...)


  • System configuration and Specifications subject to change without notice
  • * Film property, surface quality and layer stack dependent
  • Customized system available for special applications
  • TFProbe is registered trademark of Angstrom Sun Technologies Inc.