{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:FD7DN4NI45TLELKPC6OLGZBIHT","short_pith_number":"pith:FD7DN4NI","canonical_record":{"source":{"id":"1507.07167","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-26T03:33:50Z","cross_cats_sorted":[],"title_canon_sha256":"c0571817ce5777a517d2eae69642d862778f5914b1bcd082d8da8b3a89b72c8b","abstract_canon_sha256":"3fc41d5b84bda24406a468933b5646c2516bf45be5dac4952c533b5305d8052c"},"schema_version":"1.0"},"canonical_sha256":"28fe36f1a8e766b22d4f179cb364283cd399beb99ef10be18755499f77b2a858","source":{"kind":"arxiv","id":"1507.07167","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.07167","created_at":"2026-05-18T01:21:37Z"},{"alias_kind":"arxiv_version","alias_value":"1507.07167v1","created_at":"2026-05-18T01:21:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.07167","created_at":"2026-05-18T01:21:37Z"},{"alias_kind":"pith_short_12","alias_value":"FD7DN4NI45TL","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FD7DN4NI45TLELKP","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FD7DN4NI","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:FD7DN4NI45TLELKPC6OLGZBIHT","target":"record","payload":{"canonical_record":{"source":{"id":"1507.07167","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-26T03:33:50Z","cross_cats_sorted":[],"title_canon_sha256":"c0571817ce5777a517d2eae69642d862778f5914b1bcd082d8da8b3a89b72c8b","abstract_canon_sha256":"3fc41d5b84bda24406a468933b5646c2516bf45be5dac4952c533b5305d8052c"},"schema_version":"1.0"},"canonical_sha256":"28fe36f1a8e766b22d4f179cb364283cd399beb99ef10be18755499f77b2a858","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:37.235572Z","signature_b64":"E/bH5FkErlPn8CEnbzsgS3ZgzNGBStkuEDSHpCtaYYConAalE7NPB4FjvpG6om6b/H86L4UydkSJ5VxRIKgkAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"28fe36f1a8e766b22d4f179cb364283cd399beb99ef10be18755499f77b2a858","last_reissued_at":"2026-05-18T01:21:37.234881Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:37.234881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.07167","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:21:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MfQMngehlHCt19Qvo2TxztgD1ChBj6YDgdKuJqoqCaJ96fg9SyZ0tSKT+1hz96md2dGMQXpawsL2fsF5jEWqDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:49:21.631463Z"},"content_sha256":"c20d94dcb7f250b3c226813efeb8e0105728becda5551228e29784c069baee02","schema_version":"1.0","event_id":"sha256:c20d94dcb7f250b3c226813efeb8e0105728becda5551228e29784c069baee02"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:FD7DN4NI45TLELKPC6OLGZBIHT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Second harmonic generation and pulse shaping in positively and negatively spatially dispersive nanowaveguides: comparative analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Alexander K. Popov, Sergey A. Myslivets","submitted_at":"2015-07-26T03:33:50Z","abstract_excerpt":"Comparative analysis of second harmonic generation in ordinary and backward-wave settings is presented. Extraordinary properties of frequency doubling nonlinear optical reflectivity and pulse shaping through phase matching of ordinary and backward electromagnetic waves in the nanowaveguides with mixed negative/positive spatial dispersion is demonstrated with numerical simulations."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.07167","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:21:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xtf27qXumm4HBwiVLkaXuJtcmFKzvEhNxtGvBlI5qZzfd3k8aZZz3c638Ck2TuQk3YvgqfldBxU/Vb8TW3I0AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:49:21.632073Z"},"content_sha256":"44497945ad471ebe15a1247f5d92faa74d47259e7f57db82c55a609d066773a6","schema_version":"1.0","event_id":"sha256:44497945ad471ebe15a1247f5d92faa74d47259e7f57db82c55a609d066773a6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FD7DN4NI45TLELKPC6OLGZBIHT/bundle.json","state_url":"https://pith.science/pith/FD7DN4NI45TLELKPC6OLGZBIHT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FD7DN4NI45TLELKPC6OLGZBIHT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T19:49:21Z","links":{"resolver":"https://pith.science/pith/FD7DN4NI45TLELKPC6OLGZBIHT","bundle":"https://pith.science/pith/FD7DN4NI45TLELKPC6OLGZBIHT/bundle.json","state":"https://pith.science/pith/FD7DN4NI45TLELKPC6OLGZBIHT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FD7DN4NI45TLELKPC6OLGZBIHT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:FD7DN4NI45TLELKPC6OLGZBIHT","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":"3fc41d5b84bda24406a468933b5646c2516bf45be5dac4952c533b5305d8052c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-26T03:33:50Z","title_canon_sha256":"c0571817ce5777a517d2eae69642d862778f5914b1bcd082d8da8b3a89b72c8b"},"schema_version":"1.0","source":{"id":"1507.07167","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.07167","created_at":"2026-05-18T01:21:37Z"},{"alias_kind":"arxiv_version","alias_value":"1507.07167v1","created_at":"2026-05-18T01:21:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.07167","created_at":"2026-05-18T01:21:37Z"},{"alias_kind":"pith_short_12","alias_value":"FD7DN4NI45TL","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FD7DN4NI45TLELKP","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FD7DN4NI","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:44497945ad471ebe15a1247f5d92faa74d47259e7f57db82c55a609d066773a6","target":"graph","created_at":"2026-05-18T01:21:37Z","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":"Comparative analysis of second harmonic generation in ordinary and backward-wave settings is presented. Extraordinary properties of frequency doubling nonlinear optical reflectivity and pulse shaping through phase matching of ordinary and backward electromagnetic waves in the nanowaveguides with mixed negative/positive spatial dispersion is demonstrated with numerical simulations.","authors_text":"Alexander K. Popov, Sergey A. Myslivets","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-26T03:33:50Z","title":"Second harmonic generation and pulse shaping in positively and negatively spatially dispersive nanowaveguides: comparative analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.07167","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:c20d94dcb7f250b3c226813efeb8e0105728becda5551228e29784c069baee02","target":"record","created_at":"2026-05-18T01:21:37Z","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":"3fc41d5b84bda24406a468933b5646c2516bf45be5dac4952c533b5305d8052c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-26T03:33:50Z","title_canon_sha256":"c0571817ce5777a517d2eae69642d862778f5914b1bcd082d8da8b3a89b72c8b"},"schema_version":"1.0","source":{"id":"1507.07167","kind":"arxiv","version":1}},"canonical_sha256":"28fe36f1a8e766b22d4f179cb364283cd399beb99ef10be18755499f77b2a858","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28fe36f1a8e766b22d4f179cb364283cd399beb99ef10be18755499f77b2a858","first_computed_at":"2026-05-18T01:21:37.234881Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:37.234881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E/bH5FkErlPn8CEnbzsgS3ZgzNGBStkuEDSHpCtaYYConAalE7NPB4FjvpG6om6b/H86L4UydkSJ5VxRIKgkAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:37.235572Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.07167","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c20d94dcb7f250b3c226813efeb8e0105728becda5551228e29784c069baee02","sha256:44497945ad471ebe15a1247f5d92faa74d47259e7f57db82c55a609d066773a6"],"state_sha256":"ac446464989a1513e300aad9bf892f700aa011a87f4b931c9bc08b9bb9d77d31"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hkgxkU2UbOtG/0tRFdM+HfQvm6yKdK9EdGU/fvZuRdcb2wyw9aZNle0U2uyr3Zw8j8KUWFoa8GzY4N+q/EYxDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:49:21.636079Z","bundle_sha256":"3325502cdd53a8ed585d7ecd4b4fa79df06ae791b17438f7b67a749b17a29df7"}}