software to fit optical spectra - Quantum Materials Group

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Figure 4-22 The “Suspend” window. Parameters: no parameters Command name: Exit Description: terminates the execution of macro without going further. Note: this command is useful during the ‘debugging’ of the macro. Parameters: Name Type Description What if omitted QuitApp Integer If QuiteApp ≠ 0, then the application will be terminated also Assumed to be 0 4.11.4. Dataset macro commands Command name: DatasetManager Description: shows the “Dataset Manager” window on the screen and sets its position Parameters: Name Type Description What if omitted XPos Integer Horizontal position of the left side (in The position is not screen pixels) changed YPos Text Vertical position of the top side (in The position is not screen pixels) changed Command name: LoadDataset Description: loads a dataset Note: This command has the same effect as manual dataset loading (section 4.8). Even though not more than 10 datasets can be loaded manually in the dataset manager, up to 100 datasets can be loaded with this command. Parameters: Name Type Description What if omitted DatasetNo Integer Dataset number, corresponding to the slot number in the Dataset Manager. Starts from 1. Assumed to be 1 Guide to RefFIT Page 82
Quantity Text Abbreviation of the quantity, which is ascribed to this dataset, e.g. “R”, “S1” etc. (see Table 4-2); MasterFile Text The name of the master file (including file path, if the file is not in the same directory, as the macro file), i.e. “R.DAT”, or “C:\MYDATA\E2.DAT”, or “..\SPECTRA\N1.DAT” XMethod Integer Specifies the algorithm used to generate column X in the database. =1: X is taken from the master file (1 st column) =2: X is taken from the extra file, according to parameter XFile =3: X is generated, according to parameters Xmin, Xmax, XPts and XGrid XFile Text The name of the extra file, used to generate column X (including file path, if the file is not in the same directory, as the macro file). Only applies when XMethod=2. XMin Double The minimum value of the generated X Only applies, when XMethod=3. XMax Double The maximum generated X value.Only applies when XMethod=3. XPts Integer The number of the generated X values. Only applies when XMethod=3. XGrid Integer Specifies the grid type of the generated X values =1: linear grid (equally spaced values) =2: logarithmic grid YMethod Integer Specifies the algorithm used to generate column Y in the dataset. =1: Y is taken from the master file (2 nd column) =2: Y is set to a constant value, according to parameter YVal YVal Double Specifies the constant value to be set to column Y. Only applies when YMethod=2. YErrMethod Integer Specifies the algorithm used to generate column YErr in the dataset. =1: YErr is taken from the master file (3 rd column) Assumed to be “R” (i.e. reflectivity) Does not load any dataset Assumed to be 1 No action is taken (if XMethod=2). Assumed to be 1.0 Assumed to be 1000.0 Assumed to be 1000 Assumed to be 1 Assumed to be 1 Assumed to be 0.0 Assumed to be 0.01 Guide to RefFIT Page 83
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Last updated: 20.04.2004 Guide to R
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4.8. Dataset manager ..............
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that time. The later development of
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1.4. Let’s keep in touch Please,
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2.1.1. Levenberg-Marquardt algorith
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Guess initial parameters p , , p 1
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achieve a proper ‘balance’ betw
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The third requirement is that at ve
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Equation 2-19 is useful to estimate
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The first problem is that the Loren
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The problem can be circumvented by
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In these cases the fitting of the d
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3. Tutorial This chapter shows how
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Figure 3-3 Graph contents window is
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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 and 42: Figure 3-25 The general RefFIT view
Page 43 and 44: MainWindow(XPos = 0, YPos = 0, Widt
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: Before a macro is actually executed
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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