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Substrate Index Data File
File format, CSV file with three columns: Wavelength (nm), Index and K value. No headings
are required, just commas to indicate each column. No absorption data? No problem, just use
zeros for the K value.
The shortest and longest wavelength in the file determine the valid wavelength range of the new
material, so at least two rows are required. The program will interpolate between wavelengths.
Only one user defined index file is allowed in a session.
Hello and welcome to the Thin Film Designer. We have added some new capabilities.
Lets take a look at some of the amazing features of this tool.
You can customize coating and substrate materials this section.
You can even upload your own CSV file with wavelength dependent index details of your substrate.
No column headers required, just wavelength, index, absorption. No absorption data! Just put a zero!
Here you can enter the starting design using standard thin film notation, .5H and .5L is one 1/2 layer of high index followed by 1/2 layer of low index.
(.5H .5L)10 would be 10 pairs of these layers.
After optimising or selecting a suggested model the new design will be shown here.
You can plot your design using this button or by just typing 'Enter' on any text box.
You can optimise your design using this button.
You send your design to us or a collegue or even download a CSV file.
Selecting this option allows you to add metal layers such as aluminum, silver or gold to your design.
Metal layers have a lot of absorption and need to be less than 10 nm thick for transmission. During optimisation the thickness of the metal layer can be frozen.
This prevents Optimise from removing the metal layer.
Selecting this option allows you to place substrate materials inside of the coating layers. This is useful for simulating an etalon design or adding a third material to the coating.
(1H 1L)5 1H 100M (1H 1L)5 1H would be a simple etalon of material (M) surrounded by high reflecting coatings.
You can customize the wavelength range and reflectivity or transmission targets of your design using these options.
You can add targets to your design and/or tweak each one individually.
The suggest and optimisation algorithms will try to match all of them as close as possible.
Have our system to search for a model closer to your targets.
The suggestion system is improving everyday, so remember to check it out often
This chart is interactive, you can zoom in or out using the slider or just by drawing a rectangle in your area of interest.
You can show or hide graphs just by clicking on the legend name.
These options allow you to customize the way that the chart is rendered.
This option allows you to select the input and displayed thin film layer units.
Have fun using the designer and don't hesitate to get in touch with us.
The people at LightMachinery are veterans of the laser and optics world with many years of experience in the areas of optical design, high power lasers, optical fabrication, laser systems, metrology, thin film coatings and custom machinery fabrication.
Feel free to send us a message at and tap into our wealth of experience, we try to respond to any inquiry in less than 24 hours.
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