{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PN7DB2FVM35VLXLWQBAGTTIS5O","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":"16488549f77adb41620d020e78a4ef2fa3b6798d2b3cdd6f786e7bbe007b62c1","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-12-03T21:16:31Z","title_canon_sha256":"8744380b96e90954f25dd0106fa0b9af1052705b0b1e1059db82edd0a0ff4c9b"},"schema_version":"1.0","source":{"id":"1912.01685","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.01685","created_at":"2026-07-05T00:53:43Z"},{"alias_kind":"arxiv_version","alias_value":"1912.01685v1","created_at":"2026-07-05T00:53:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.01685","created_at":"2026-07-05T00:53:43Z"},{"alias_kind":"pith_short_12","alias_value":"PN7DB2FVM35V","created_at":"2026-07-05T00:53:43Z"},{"alias_kind":"pith_short_16","alias_value":"PN7DB2FVM35VLXLW","created_at":"2026-07-05T00:53:43Z"},{"alias_kind":"pith_short_8","alias_value":"PN7DB2FV","created_at":"2026-07-05T00:53:43Z"}],"graph_snapshots":[{"event_id":"sha256:dc97dea20b9f7edbebcc753a08c0a64693c0742551648bcb8b02126a21c9e4f0","target":"graph","created_at":"2026-07-05T00:53:43Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1912.01685/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present femtosecond pump-probe measurements of the nondegenerate (1960$\\,$nm excitation and 1176--1326$\\,$nm probe) two-photon absorption spectra of 8 $\\,$nm GaAs/12$\\,$nm Al$_{0.32}$Ga$_{0.68}$As quantum well waveguides. Experiments were performed with light pulses co-polarized normal and tangential to the quantum well plane. The results are compared to perturbative calculations of transition rates between states determined by the $\\mathbf{k}\\cdot\\mathbf{p}$ method with an 8 or 14 band basis. We find excellent agreement between theory and experiment for normal polarization, then use the mo","authors_text":"David Hagan, Eric W. Van Stryland, Himansu Pattanaik, Junxiong Wei, Nicholas Cox, Simon-Pierre Gorza, Thamer Tabbakh","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-12-03T21:16:31Z","title":"Nondegenerate Two-Photon Absorption in GaAs/AlGaAs Multiple Quantum Well Waveguides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.01685","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":"sha256:7355487c1a6d1ab680fbc4aa422b545bffd58b7c116ecd3327985c2f2e48335c","target":"record","created_at":"2026-07-05T00:53:43Z","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":"16488549f77adb41620d020e78a4ef2fa3b6798d2b3cdd6f786e7bbe007b62c1","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-12-03T21:16:31Z","title_canon_sha256":"8744380b96e90954f25dd0106fa0b9af1052705b0b1e1059db82edd0a0ff4c9b"},"schema_version":"1.0","source":{"id":"1912.01685","kind":"arxiv","version":1}},"canonical_sha256":"7b7e30e8b566fb55dd76804069cd12eb8dfa9bdaf1c401662f69f7e8af812eef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b7e30e8b566fb55dd76804069cd12eb8dfa9bdaf1c401662f69f7e8af812eef","first_computed_at":"2026-07-05T00:53:43.344823Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:53:43.344823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KYBlKIq8/YO6pD/6fK/U2HGpcXBuSvgdnSPhTgwgHuLw4bOgkfZ6ppTGp5pb0ar5xXWqN4e//cmgfhZcvlx1BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:53:43.345280Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.01685","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7355487c1a6d1ab680fbc4aa422b545bffd58b7c116ecd3327985c2f2e48335c","sha256:dc97dea20b9f7edbebcc753a08c0a64693c0742551648bcb8b02126a21c9e4f0"],"state_sha256":"962ab004e03ddf46fe826aacfb6606ee5e1399df4bf3caa295d7abd3eef3754b"}