| --- |
| license: mit |
| task_categories: |
| - tabular-regression |
| tags: |
| - thin-film |
| - optics |
| - photonics |
| - inverse-design |
| - transfer-matrix-method |
| - spectral-data |
| pretty_name: PRISM Thin-Film Optical Design Dataset |
| size_categories: |
| - 10M<n<100M |
| --- |
| # PRISM -- Thin-Film Optical Design Dataset |
|
|
| Synthetic dataset of thin-film multilayer optical stacks and their simulated reflectance/transmittance spectra. Generated for training and evaluating [PRISM](https://github.com/wang-henry4/prism) (Position-encoded Regressive Inverse Spectral Model), an autoregressive transformer for inverse thin-film design. |
|
|
| Each sample is a (materials, thicknesses, spectrum) triple: a thin-film stack definition and its physically simulated optical response. |
|
|
| ## Subsets |
|
|
| ### Training data |
|
|
| | Subset | Layers | Thickness step | Thickness range | Splits | Total samples | |
| |---|---|---|---|---|---| |
| | `max_len_20_10nm` | 1--20 | 10 nm | 10--500 nm | train / dev / val | 10,110,000 | |
|
|
| ### Validation-only (out-of-distribution) |
|
|
| These subsets have no training split and are used to evaluate generalisation. |
|
|
| | Subset | Layers | Thickness step | Thickness range | Samples | Purpose | |
| |---|---|---|---|---|---| |
| | `max_len_20_5nm` | 1--20 | 5 nm | 5--250 nm | 110,000 | Dev + val for 5 nm (alternate path) | |
| | `max_len_20_15nm` | 1--20 | 15 nm | 15--750 nm | 20,000 | OOD thickness step | |
| | `max_len_20_20nm` | 1--20 | 20 nm | 20--1000 nm | 10,000 | OOD thickness step | |
| | `max_len_30_10nm` | 20--30 | 10 nm | 10--500 nm | 10,000 | OOD sequence length | |
| | `max_len_40_10nm` | 30--40 | 10 nm | 10--500 nm | 10,000 | OOD sequence length | |
| | `max_len_50_10nm` | 40--50 | 10 nm | 10--500 nm | 10,000 | OOD sequence length | |
| | `thick/15nm` | 20 | 15 nm | 15--750 nm | 10,000 | Thick designs only (cum. depth >= 11,000 nm) | |
| | `thick/20nm` | 20 | 20 nm | 20--1000 nm | 10,000 | Thick designs only (cum. depth >= 11,000 nm) | |
| | `max_length_10` | 1--10 | 5 nm | 5--250 nm | 30,000 | Short sequence validation | |
|
|
| ## Github |
| https://github.com/wang-henry4/prism/blob/main/master_eval.sh |
