Product page, before and after
A product-family page for the same filters: hero copy, a spec table with conditions, an eight-question technical FAQ and the inquiry-form questions.
Coming soon
Sample projects and working calculators
EUV Insight is a thin-film design app I built for optics engineers. The document samples below include public references and calculation files.
Photodiode readout board
A CAD view of a photodiode readout board, showing the photodiode connections, adjustment controls, and power and signal connectors.
Explore readout electronics
EUV Insight
I built EUV Insight to calculate the optical response of EUV thin films and multilayer stacks. Change the materials and thicknesses, compare transmission and reflectance, and examine how thickness variation affects the result.
The app includes angle-dependent maps and exports for spectra, figures and reports.
3D models
Two illustrative photodiode packages, built to realistic dimensions, show how the STEP models from my CAD and circuit design work appear here. Drag to turn a model, pick a standard view or open it full screen.
- Envelope
- 6.25 × 5.40 × 15.75 mm
- Bodies
- 9
Drag to rotate · pinch to zoom
TO-46 style photodiode can
Illustrative model. A TO-46 style can built to realistic dimensions: a Ø5.40 mm gold-plated header with an orientation tab, a nickel cap with a flat glass window over a Ø1.00 mm active area, and three leads on a Ø2.54 mm circle.
Design-in files
The filter family’s STEP model, outline and mounting drawing and six renders, shown beside its datasheet.
I also do circuit design for photodiode readout electronics: a TIA front end simulated in SPICE and MATLAB, then the KiCad schematic and board.
Coming soon3D models, drawings and CAD libraries
Shown here for a 14-pin laser diode module: the outline drawing and the KiCad footprint.
Optical filter selection guide
This guide covers transmission and blocking requirements through to the specifications for a request for quote. It also serves as the white-paper example, with a selection method and computed worked example.
What’s inside:
- Filter types on one page
- The specifications that matter
- Optical density and blocking, including stacks of filters
- Angle of incidence, and converging and diverging beams
- Bandwidth and edge steepness
- Substrates, coatings and environment
- A selection flow, worked examples and a request-for-quote checklist
Coming soonTry the angle shift calculator
Line chart. Wavelength (nm) from 495 to 560. 0°: 0.00 to 0.03; 20°, unpolarized: 0.00 to 0.01; 45°, s: 0.00 to 0.00; 45°, p: 0.06 to 0.02 (Transmission).
Bandpass filter datasheet revision
The original example has one spec table, no test conditions and a scanned-looking curve. The rewrite adds conditions, limits and computed curves for the filter family.
What changed:
- Test conditions stated for every specification
- Typical values kept apart from minimum and maximum limits
- Three curves drawn from code: transmission, center wavelength against angle, and center wavelength against temperature
- Tolerance notes and a part-number key
Coming soon
NB-series narrow bandpass filterREV A
| Wavelength | 532 nm |
| Bandwidth | 3 nm |
| Transmission | >85% |
| Blocking | OD5 |
Specifications subject to change.
NB-series narrow bandpass filterREV B
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Center wavelength | AOI 0°, 23 °C | 531 | 532 | 533 | nm |
| Bandwidth (FWHM) | AOI 0° | 2.6 | 3.0 | 3.4 | nm |
| Peak transmission | λ₀, AOI 0° | 85 | 90 | % | |
| Blocking | 400 to 1100 nm | 5 | 6 | OD |
Tolerance notes
NB5323B
TEC control for laser wavelength stability
For OEM engineers integrating a TEC-cooled laser diode module: from a wavelength tolerance to the sensor, the controller gains and the TEC’s capacity.
What’s inside:
- The short answer, up front
- From wavelength tolerance to temperature budget
- Where the temperature error comes from
- Heat load, and TEC capacity and drive
- Sensor choice and placement
- Controller settings from a step test
- A worked example, a checklist, and assumptions and limits
Coming soonTry the TEC heat load calculator
More samples
Each example includes its calculation files.
Technical article
“How far does your filter’s passband move at 10 degrees in an f/2 cone?” About 1,600 words, with two figures drawn from code.
Coming soonLaunch package example
The datasheet, product page and article above, shown as one launch with a short “what shipped when” timeline.
Coming soonCapability card
One page for a precision-optics maker: what it makes, three specifications that matter and a design-in checklist.
Coming soonData report and template
A synthetic dataset of 24 filter units across temperature: a cleaned workbook, a two-page report with charts from code, and the reusable template.
Coming soon
From photon to signalScroll to explore
A silent cinematic journey follows EUV light through reflective optics into a silicon photodiode, then follows charge collection through a circuit to a readout signal as the instrument assembles.
Calculators
Each one runs in your browser. The numbers you enter aren’t sent anywhere.
TEC heat load and required ΔT
Enter the drive current, voltage, temperatures and TEC ratings. See the heat load, the TEC current and voltage, and how much of the TEC’s capacity you’re using.
Open the calculatorOptical density of a filter stack
Enter up to three filters’ optical densities, how much of the blocked light each reflects, and the power you can allow through. See the stack’s OD two ways and whether it blocks enough.
Open the calculatorFilter shift with angle of incidence
Enter the center wavelength, effective index and angle, and optionally the f-number of a converging beam. See how far the passband moves, and the tilt that reaches a target wavelength.
Open the calculator
Discuss your project
Request an application note, datasheet refresh or calculator for your parts. You can also start with a free review of your technical content.