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CompleteEASE™ (short for Complete Easy-to-use Acquisition/Analysis Software for Spectroscopic Ellipsometry) is a software package for in-situ and ex-situ data acquisition and analysis.  CompleteEASE™ combines JAWCo's vast in-situ ellipsometry experience with an easy-to-use interface, so that even novice users can quickly and easily perform complex data analysis.  The CompleteEASE™ program provides a graphical interface for building models and displaying experimental data and model fits. Its simple interface to the SE hardware makes the process of acquiring accurate SE data appear smooth and effortless.
The User Interface
To make CompleteEASE™ as efficient to use as possible for different applications, we have created three modes, each with a slightly different user interface.  The three modes are as follows:
  • Single Scan Mode  
    Used to acquire and analyze data at a single point in time.

  • Dynamic Scan Mode  
    Used to acquire and analyze real-time ellipsometry data. This mode (shown in Figure 1) displays the model and allows the user to change the model in real time.

  • Simple Mode 
    Used to acquire and analyze real-time ellipsometry data. This mode (shown in Figure 2) provides a push-button interface to pre-built models and a graph that displays the model fit parameter in real-time.  

The graphs of the CompleteEASE™ program are also an important user interface component.  Not only do they display data, but they interact with the data and models to allow the user to easily select time ranges, wavelength ranges, and model dependant parameters such as time-slices for fitting and defining a time range for a virtual interface.  These are just a couple of examples of how the graphs can be used to efficiently sift through the enormous amount of data that can be acquired with in-situ ellipsometry.  

 

Figure 1. CompleteEASE™ software in "Dynamic Mode". The top graph displays data versus time at five wavelengths.  The bottom graph displays data versus wavelength. This graph is updated as soon as each new spectroscopic scan is acquired.  

 

Figure 2.  CompleteEASE™ software in "Simple Mode".  The top graph displays data verses time at 5 wavelengths.  The bottom graph displays the model fit parameter (in this case a-Si thickness) as it varies with time.  In Simple Mode the user chooses from pre-built models making data acquisition and analysis possible for people with little or no ellipsometry experience.

Models
There are many different types of models in CompleteEASE™ representing different types of analyses.  They range from a general model resembling that of WVASE32® to models designed to accomplish specific tasks.  Below is a list of several types of models.  
  • Multilayer Model: similar to WVASE32® models. The user builds up model by adding layers representing the sample measured.

  • Multi-Time Model: Similar to Multilayer Model, but is used to analyze a user-defined set of time slices in a data set.  

  • Dynamic Optical Constant Extractor: used to extract optical constants from one or more in-situ data files.  Convenient way of building an optical constant library for processes such as those requiring elevated temperatures.  

  • Optical Constant Comparer: utility for comparing optical constants of materials and fitting dispersion model parameters to a set of reference optical constants.

Process Integration

CompleteEASE™ software is designed to be easily integrated into a process to provide real-time feedback and control of film growth and etch steps.  CompleteEASE™ can be used to simply close a shutter when a specific thickness is reached.  CompleteEASE™ can also be connected to a process control computer which sends commands to CompleteEASE™ to start and end data acquisition, start specific models, and set target thicknesses, allowing feed back control with no human interaction with the ellipsometer.  There is an enormous amount of flexibility in the software's communication and control architecture to allow for integration into many types of processes.  Please contact us to find out how an in-situ ellipsometer can be incorporated into your process.  

 

 

   
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