{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ADISDDQIOZON6RYCB2BQ55NWVO","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":"5141cfc2f227ebc7e47d9c51a7b8472d75ba4419727c92a080b077e360ffca29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-07-14T17:03:20Z","title_canon_sha256":"c6cd3c01f3b55a1919711b265b3b02c48f49f09b2440dd94f6d0120879efed12"},"schema_version":"1.0","source":{"id":"1407.3727","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.3727","created_at":"2026-05-18T01:20:47Z"},{"alias_kind":"arxiv_version","alias_value":"1407.3727v1","created_at":"2026-05-18T01:20:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.3727","created_at":"2026-05-18T01:20:47Z"},{"alias_kind":"pith_short_12","alias_value":"ADISDDQIOZON","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"ADISDDQIOZON6RYC","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"ADISDDQI","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:1bdf73428e601f94b62cc71c767e549f075039f35c9db63890fec336a0cda2d4","target":"graph","created_at":"2026-05-18T01:20:47Z","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":"We demonstrate the possibility of generation of coherent radiation with tunable frequencies higher than the frequency of the driving field $\\nu _{d}$ in a nonlinear medium utilizing the difference combination resonance that occurs when $\\nu _{d}$ matches the difference of the frequencies of the two generated fields $\\omega _{1}$ and $\\omega _{2}$. We find that such a resonance can appear in materials which have opposite signs of refractive index at $\\omega _{1}$ and $\\omega _{2}$. It can also occur in positive refractive index materials with strong anomalous dispersion if at one of the generat","authors_text":"Anatoly A. Svidzinsky, Jizhou Wang, Luojia Wang, Marlan O. Scully, Xiwen Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-07-14T17:03:20Z","title":"Parametric generation of high frequency coherent light in negative index materials and materials with strong anomalous dispersion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.3727","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":"sha256:38cd4ceee7b2730af2f1f69963e4ed353bc8a5906ea16d9d3cde809192495ea0","target":"record","created_at":"2026-05-18T01:20:47Z","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":"5141cfc2f227ebc7e47d9c51a7b8472d75ba4419727c92a080b077e360ffca29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-07-14T17:03:20Z","title_canon_sha256":"c6cd3c01f3b55a1919711b265b3b02c48f49f09b2440dd94f6d0120879efed12"},"schema_version":"1.0","source":{"id":"1407.3727","kind":"arxiv","version":1}},"canonical_sha256":"00d1218e08765cdf47020e830ef5b6ab8e6fd313c1530c380f222ee1c63531ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00d1218e08765cdf47020e830ef5b6ab8e6fd313c1530c380f222ee1c63531ca","first_computed_at":"2026-05-18T01:20:47.471922Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:47.471922Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IiOtawdoEtnTbvRyjAqmcWiOFl+eble5RyBxlFP1/TDRzB9IW+VEoDCqcfnrNUTJMrLZoJykyst7M7GNbmsfCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:47.472361Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.3727","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38cd4ceee7b2730af2f1f69963e4ed353bc8a5906ea16d9d3cde809192495ea0","sha256:1bdf73428e601f94b62cc71c767e549f075039f35c9db63890fec336a0cda2d4"],"state_sha256":"e954a698a16d261d47a45995eadf403adf5288fa46068f3fa5652ebf76a6fd1f"}