{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:IO5WV5A6J5AUFIRRJSHSJJ33PM","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c0eca8b9e463f4c8cf0757b5a60062da7b32dcf32a1df747a324c3a1891a5cd9","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-04T02:07:30Z","title_canon_sha256":"e8f030c6fe048dfde5dab2105c948ffa4c856165be8e35f5aa5246c2400d15a0"},"schema_version":"1.0","source":{"id":"1511.01183","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.01183","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"arxiv_version","alias_value":"1511.01183v1","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.01183","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"pith_short_12","alias_value":"IO5WV5A6J5AU","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IO5WV5A6J5AUFIRR","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IO5WV5A6","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:07492d75f2b5329103dcd9a5e1eaa7700411c07504cb5b529882d1c039c22e80","target":"graph","created_at":"2026-05-18T01:22:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Silicon direct bonding offers flexibility in the design and development of Si optics by allowing manufacturers to combine subcomponents with a potentially lossless and mechanically stable interface. The bonding process presents challenges in meeting the requirements for optical performance because air gaps at the Si interface cause large Fresnel reflections. Even small (35 nm) gaps reduce transmission through a direct bonded Si compound optic by 4% at $\\lambda = 1.25 \\; \\mu$m at normal incidence. We describe a bond inspection method that makes use of precision slit spectroscopy to detect and m","authors_text":"Daniel T. Jaffe, Michael Gully-Santiago, Victor White","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-04T02:07:30Z","title":"Optical characterization of gaps in directly bonded Si compound optics using infrared spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.01183","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d99e9c83231f5ad6f7965459e57f1a815efba4805fae086cf5f7e337b3d7504a","target":"record","created_at":"2026-05-18T01:22:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c0eca8b9e463f4c8cf0757b5a60062da7b32dcf32a1df747a324c3a1891a5cd9","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-04T02:07:30Z","title_canon_sha256":"e8f030c6fe048dfde5dab2105c948ffa4c856165be8e35f5aa5246c2400d15a0"},"schema_version":"1.0","source":{"id":"1511.01183","kind":"arxiv","version":1}},"canonical_sha256":"43bb6af41e4f4142a2314c8f24a77b7b23fd8091d371a1e649b21501800896e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43bb6af41e4f4142a2314c8f24a77b7b23fd8091d371a1e649b21501800896e8","first_computed_at":"2026-05-18T01:22:33.460789Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:33.460789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A4TVm09IbJSriM9R85GzwRihrtaisYaNM7PnBUMv/SLlTTg6dZVVlSRCg4vzb+sHjv3Me5p/P3Z8bCptz5UqBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:33.461245Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.01183","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d99e9c83231f5ad6f7965459e57f1a815efba4805fae086cf5f7e337b3d7504a","sha256:07492d75f2b5329103dcd9a5e1eaa7700411c07504cb5b529882d1c039c22e80"],"state_sha256":"0b9448a091c3417e21091158a177f6f7118c3a7941db5dfbff1d21e163de3b95"}