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Diffractive beam splitter into a 7 × 7 spot array
Design an etched silica splitter that divides a 632.8 nm beam into a 7 × 7 array of equal beams, maximizing efficiency times uniformity.
| 1 | { |
| 2 | "domain": "physics-astronomy", |
| 3 | "topics": [ |
| 4 | "optics-photonics" |
| 5 | ], |
| 6 | "type": "design", |
| 7 | "benchmark": { |
| 8 | "task": "Maximize efficiency × (1 − uniformity error) of a 7 × 7 beam splitter", |
| 9 | "metric": { |
| 10 | "name": "Total efficiency × (1 − uniformity error)", |
| 11 | "better": "higher" |
| 12 | }, |
| 13 | "baseline": { |
| 14 | "name": "Best leaderboard design at 400 nm (Schubert, 2024)", |
| 15 | "score": 0.5963981419901039 |
| 16 | } |
| 17 | }, |
| 18 | "source": { |
| 19 | "key": "invrs-gym", |
| 20 | "name": "invrs-gym", |
| 21 | "url": "https://invrs-io.github.io/gym/notebooks/challenges/diffractive_splitter.html", |
| 22 | "id": "diffractive_splitter", |
| 23 | "curator": "Martin F. Schubert (invrs.io)", |
| 24 | "poser": "Martin F. Schubert, after a LightTrans case study", |
| 25 | "status": "archived (final leaderboard, October 2025)", |
| 26 | "as_of": "2026-10-20", |
| 27 | "catalog": "0521c19bbd38" |
| 28 | }, |
| 29 | "review": true, |
| 30 | "approval": "first-time" |
| 31 | } |