Interactive field guide · mechanistic lab
Two-photon lithography, made visible.
Follow focused femtosecond light through nonlinear exposure, radical chemistry, oxygen inhibition, gelation, and development—then change the parameters yourself.
FOCUSED FIELDCALCULATED MATTER
One field · overlapping vocabulary
TPL. 2PP. TPP. MPL. DLW.
Two-photon lithography and two-photon polymerization often name the same resin-based process from different angles. Multiphoton lithography is the wider family. Direct laser writing is wider still—and is not always multiphoton.
Map the terminologyA field guide, not a keyword list.
01Two-photon lithographyThe core process, from nonlinear absorption to a developed three-dimensional structure.TPL · 2PP · TPP02Multiphoton lithographyThe broader family of confined nonlinear fabrication methods—and where two-photon writing fits.MPL · MPP · MP3DL03The model spaceCompare dose thresholds, focal-field models, chemical kinetics, transport, and development.Optics · chemistry · transport04Parameter atlasAn intuitive explanation of every path, light, resin, and development control in the lab.Power · speed · NA · oxygen
A model you can interrogate
The voxel is a consequence, not a stamp.
The lab does not paint the intended geometry as a cured result. A vectorial focal field drives a timed scan history; chemical fields evolve in the volume; development removes what the model predicts cannot resist the bath.
What changes what?
PPowerStronger nonlinear sourcevScan speedMore or less dwell timeNANumerical apertureTighter focal concentrationo₀OxygenA chemical brake
Understand all 27 parameters