software to fit optical spectra - Quantum Materials Group

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Figure 3-26 The general RefFIT view after the data fitting with a model, which contains 7 oscillators. 3.3. Using macros 3.3.1. Writing a simple macro All actions that we went through in section 3.2 can be programmed in a macro (see section 4.11). An obvious advantage of a macro is that it can be edited and run many times. A stored macro also helps to recollect what exactly analysis has been performed the last time. An example of such a macro is given by the file “DEMO.RFS” in the directory “TUTORIAL\PART3” (I advise to put the extension “.RFS” to all macro filenames). Below I put the listing of this file. Each command corresponds to some user action. They are separated by semicolons “;”. Note, that all lines starting from “#” are ignored by the macro interpreter. You can check the syntax of particular commands in the Reference (section 4.11). ################################################################## # # This macro instructs RefFIT to perform the actions described # in the RefFIT Manual (Tutorial section 3.2) # All input data are taken from the directory "..\PART2" # # Written by A.Kuzmenko (2004) # ################################################################## #------------------------------------------------------------------------------------ # sets the dimensions and the title of the main (application) window Guide to RefFIT Page 42
MainWindow(XPos = 0, YPos = 0, Width = 1024, Height = 740, Title = "macro example"); #------------------------------------------------------------------------------------ # loads four datasets # here the frequency set is generated by RefFIT (XMethod = 3) LoadDataset(DatasetNo = 1, Quantity = "R", MasterFile = "..\PART2\R.DAT", XMethod = 3, Xmin = 25.0, Xmax = 5000.0, XPts = 1000, XGrid = 2); # here the frequency sets are taken from the master file (XMethod = 1) LoadDataset(DatasetNo = 2, Quantity = "E1", MasterFile = "..\PART2\E1.DAT", XMethod = 1); LoadDataset(DatasetNo = 3, Quantity = "E2", MasterFile = "..\PART2\E2.DAT", XMethod = 1); LoadDataset(DatasetNo = 4, Quantity = "S1", MasterFile = "..\PART2\S1DC.DAT", XMethod = 1); #------------------------------------------------------------------------------------ # creates a model (which is AUTOMATICALLY ascribed ModelNo = 1) NewModel(XPos = 0, YPos = 50, Width = 300, Height = 400); # loads a saved model file into the model window LoadModel(ModelNo = 1, File = "..\PART2\MODEL2.RFM"); #------------------------------------------------------------------------------------ # makes and sets up three graph windows # creates a graph (which is AUTOMATICALLY ascribed GraphNo = 1) NewGraph(XPos = 300, YPos = 50, Width = 420, Height = 350); # sets the graph properties GraphProperties(GraphNo = 1, Xmin = 10, Xmax = 5500.0, Xlog = 0, Ymin = 0.65, Ymax = 1.0, Ylog = 0, YTitle = "Reflectivity"); # plots the dataset #1 AddDataCurve(GraphNo = 1, DatasetNo = 1, nColor = 0, ShowLine = 1, ShowSymbol = 1, ShowError = 0, nSymbolSize = 1, nSymbolShape = 0, SymbolOpen = 1, Scale = 1.0, Shift = 0.0); # plots a reflectivity curve, generated by the model #1 AddModelCurve(GraphNo = 1, ModelNo = 1, Quantity = "R", nColor = 0, Scale = 1.0, Shift = 0.0); # creates a graph (which is ascribed GraphNo = 2) NewGraph(XPos = 300, YPos = 400, Width = 420, Height = 330); # and so forth... GraphProperties(GraphNo = 2, Xmin = 5000.0, Xmax = 36000.0, Xlog = 0, Ymin = -30.0, Ymax = 30.0, Ylog = 0, YTitle = "Eps1, Eps2"); AddDataCurve(GraphNo = 2, DatasetNo = 2, nColor = 0, ShowLine = 1, ShowSymbol = 1, ShowError = 0, nSymbolSize = 1, nSymbolShape = 0, SymbolOpen = 1, Scale = 1.0, Shift = 0.0); AddDataCurve(GraphNo = 2, DatasetNo = 3, nColor = 0, ShowLine = 1, ShowSymbol = 1, ShowError = 0, nSymbolSize = 1, nSymbolShape = 0, SymbolOpen = 1, Scale = 1.0, Shift = 0.0); Guide to RefFIT Page 43
Page 1 and 2: Last updated: 20.04.2004 Guide to R
Page 3 and 4: 4.8. Dataset manager ..............
Page 5 and 6: that time. The later development of
Page 7 and 8: 1.4. Let’s keep in touch Please,
Page 9 and 10: 2.1.1. Levenberg-Marquardt algorith
Page 11 and 12: Guess initial parameters p , , p 1
Page 13 and 14: achieve a proper ‘balance’ betw
Page 15 and 16: The third requirement is that at ve
Page 17 and 18: Equation 2-19 is useful to estimate
Page 19 and 20: The first problem is that the Loren
Page 21 and 22: The problem can be circumvented by
Page 23 and 24: In these cases the fitting of the d
Page 25 and 26: 3. Tutorial This chapter shows how
Page 27 and 28: Figure 3-3 Graph contents window is
Page 29 and 30: Figure 3-7 Click the button and in
Page 31 and 32: If you are still far from this fitt
Page 33 and 34: Figure 3-15 The model and experimen
Page 35 and 36: Figure 3-18 The “Graph properties
Page 37 and 38: Figure 3-20 Loading the reflectivit
Page 39 and 40: Figure 3-22 The general RefFIT view
Page 41: Figure 3-25 The general RefFIT view
Page 45 and 46: emarkable ‘anomaly’, related to
Page 47 and 48: ###################################
Page 49 and 50: # restores the original application
Page 51 and 52: 4. Reference 4.1. System requiremen
Page 53 and 54: Figure 4-2 The “Parameter control
Page 55 and 56: The model file stores information a
Page 57 and 58: considering multiple (Fabri- Perot)
Page 59 and 60: optical conductivity in practical u
Page 61 and 62: Kronig friendly, so be careful! “
Page 63 and 64: function. This command cannot be us
Page 65 and 66: Iinc Itrans ε ε ( 1) ( 2) … (n)
Page 67 and 68: In ellipsometry the complex ratio
Page 69 and 70: ` Figure 4-10 The experimental conf
Page 71 and 72: Here ω p and ∞ ε are considered
Page 73 and 74: points “#pts” and the grid type
Page 75 and 76: 4.9.2. Graph contents To set the gr
Page 77 and 78: Available ChiSq terms and click the
Page 79 and 80: At each iteration a linear equation
Page 81 and 82: Before a macro is actually executed
Page 83 and 84: Quantity Text Abbreviation of the q
Page 85 and 86: Parameters: Name Type Description W
Page 87 and 88: “Wp” - plasma frequency; “G
Page 89 and 90: ShowLine Integer =12: Chalk =13: Br
Page 91 and 92: XMin Double Minimal X (frequency) v
Page 93 and 94:
always come in pairs. All commands
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