{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:UV7LQI6FDGNSJUMGU5WCLTGVPM","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":"cc796561f8153c553cc8390af3f12d189b6bc3e049fed99356e4fca8ecc94c2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-07-10T16:54:10Z","title_canon_sha256":"d6f56c7ab3ad1e35a36d5ee890754a66a16c04c33e6337d1d77915df24123cdd"},"schema_version":"1.0","source":{"id":"1807.03752","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03752","created_at":"2026-05-18T00:11:01Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03752v1","created_at":"2026-05-18T00:11:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03752","created_at":"2026-05-18T00:11:01Z"},{"alias_kind":"pith_short_12","alias_value":"UV7LQI6FDGNS","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"UV7LQI6FDGNSJUMG","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"UV7LQI6F","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:b889ba74b3d5a634ad24222ad6942e1c4724f5e5aa70221fadac2fefc0f18776","target":"graph","created_at":"2026-05-18T00:11:01Z","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":"In this paper, we propose a technique named reflection F-scan or RF-scan, that can be used to measure the nonlinear-refractive index n_2 of thin-film semiconductors. In this technique, a p-polarized Gaussian beam is focused using an electrically focus-tunable lens onto a sample, which is positioned at a fixed distance from the lens and makes an angle with respect to the optical axis. Due to EFTL has the capability to vary its focal distance over a specific range when an electric current is applied to it. The electrically focus-tunable lens varies its focal distance as a function of an applied ","authors_text":"Abdullatif Hamad, Edgar Rueda, Hernando Garcia, Juan Serna, Juli\\'an Henao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-07-10T16:54:10Z","title":"Single-beam reflection technique for determination of nonlinear-refractive index of thin-film semiconductors using an electrically focus tunable lens"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03752","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":"sha256:1d13a75183e6c10d3464c108fd51e78c1df64211f05566906f3c2fdb8fb2536e","target":"record","created_at":"2026-05-18T00:11:01Z","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":"cc796561f8153c553cc8390af3f12d189b6bc3e049fed99356e4fca8ecc94c2e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-07-10T16:54:10Z","title_canon_sha256":"d6f56c7ab3ad1e35a36d5ee890754a66a16c04c33e6337d1d77915df24123cdd"},"schema_version":"1.0","source":{"id":"1807.03752","kind":"arxiv","version":1}},"canonical_sha256":"a57eb823c5199b24d186a76c25ccd57b009493d4c08844f2eac4ccde36403105","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a57eb823c5199b24d186a76c25ccd57b009493d4c08844f2eac4ccde36403105","first_computed_at":"2026-05-18T00:11:01.065061Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:01.065061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L5x6oWC/hH4k4EQIwc2As4VylDoRkqSEwvcJp2ltz3eupTNE8TbjhnozwnVfMtcgKxZCe7uO8DLWlsGuY78cDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:01.065866Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.03752","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d13a75183e6c10d3464c108fd51e78c1df64211f05566906f3c2fdb8fb2536e","sha256:b889ba74b3d5a634ad24222ad6942e1c4724f5e5aa70221fadac2fefc0f18776"],"state_sha256":"bdd44e4e64b26e88f282c6ff42b98a4413bf4481b8a0d5f9f58cff49d3566efb"}