TEC heat load and required ΔT
Enter the laser’s drive current and voltage, the temperatures and the TEC’s ratings. See the heat load, the TEC current and voltage, and how much of its capacity you’re using.
Engineers enter an angle, current or temperature to calculate results for their design. I test each calculator against hand-calculated cases before delivery.
Filter shift with angle of incidence
Center wavelength at this angle λ(θ)
529.991nm
Shift from normal incidence Δλ
−2.009nm
Each runs in your browser, with editable inputs and live results.
Enter the laser’s drive current and voltage, the temperatures and the TEC’s ratings. See the heat load, the TEC current and voltage, and how much of its capacity you’re using.
Enter up to three filters’ optical densities and the power you can allow through. See the stack’s OD two ways and whether it blocks enough.
Enter the center wavelength, effective index and angle, and optionally the f-number of a converging beam. See how far the passband moves.
I can host the calculator on a page you link to, or give your web person embed code. A hosting and care proposal can include updates when your product changes and a usage report, with the support scope and billing terms agreed before work starts.

A disclaimer you approve on every result.
No safety-critical or compliance calculations. These tools help an engineer choose; they don’t certify a design.
Calculations run in the browser. Nothing the visitor types is sent anywhere unless you add a “send me this result” form.
Yes. You get embed code for your product page, or I host it at an address you link to.
On hosting and care, I update the calculator and rerun its test cases. Without it, you get the source and the test cases to update yourselves.
If you want it to. A calculator can offer a “send me this result” form that goes to your inbox or CRM; that’s agreed in the scope.
The ones your applications team does by hand for customers: thermal budgets, optical density, angle shift, loss budgets, tolerance stacks.
The free review looks for the tool your buyers would use first.