{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:IXTDEMDBSR47HXI3YOZ2OLF3RH","short_pith_number":"pith:IXTDEMDB","canonical_record":{"source":{"id":"1304.4432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-04-16T13:19:15Z","cross_cats_sorted":[],"title_canon_sha256":"79a30c41e979c61b6750598d1838e5ef2d2eed7ef2262b5dda25f2096077721e","abstract_canon_sha256":"82ed0085bc654698afd8d3618e4d555772d2693ebc77406dda30ca10717dcff7"},"schema_version":"1.0"},"canonical_sha256":"45e63230619479f3dd1bc3b3a72cbb89e97aed8d995905b21a1cda96086e5dc4","source":{"kind":"arxiv","id":"1304.4432","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4432","created_at":"2026-05-18T03:27:53Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4432v1","created_at":"2026-05-18T03:27:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4432","created_at":"2026-05-18T03:27:53Z"},{"alias_kind":"pith_short_12","alias_value":"IXTDEMDBSR47","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IXTDEMDBSR47HXI3","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IXTDEMDB","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:IXTDEMDBSR47HXI3YOZ2OLF3RH","target":"record","payload":{"canonical_record":{"source":{"id":"1304.4432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-04-16T13:19:15Z","cross_cats_sorted":[],"title_canon_sha256":"79a30c41e979c61b6750598d1838e5ef2d2eed7ef2262b5dda25f2096077721e","abstract_canon_sha256":"82ed0085bc654698afd8d3618e4d555772d2693ebc77406dda30ca10717dcff7"},"schema_version":"1.0"},"canonical_sha256":"45e63230619479f3dd1bc3b3a72cbb89e97aed8d995905b21a1cda96086e5dc4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:27:53.105501Z","signature_b64":"0iYY2Yu+gkw9PU1akwiIaiF1CG+rrLH80cbVluDFucsdzVKilmY6xEdDq1hzAN6gYlxY5jRzMqUvxxoXLIYOAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"45e63230619479f3dd1bc3b3a72cbb89e97aed8d995905b21a1cda96086e5dc4","last_reissued_at":"2026-05-18T03:27:53.104919Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:27:53.104919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.4432","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":"2026-05-18T03:27:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yghn72N2M91yPHzQ6rITwAqYwfq2a/x+SIMTLrgHpXApboac4NaUgyhvyokOO6RM8K+j/Xu53sWyqBR+u8JEDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T00:54:14.750504Z"},"content_sha256":"a9afa4b3c7f3badbe85ea173eac2e015591b4bf099e7b0a30fcfe30f19be8130","schema_version":"1.0","event_id":"sha256:a9afa4b3c7f3badbe85ea173eac2e015591b4bf099e7b0a30fcfe30f19be8130"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:IXTDEMDBSR47HXI3YOZ2OLF3RH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quasi-phase-matching of high-order-harmonic generation using polarization beating in optical waveguides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Kevin O'Keeffe, Lewis Z. Liu, Simon M. Hooker","submitted_at":"2013-04-16T13:19:15Z","abstract_excerpt":"A scheme for quasi-phase-matching high-harmonic generation is proposed in which polarization beating within a hollow core birefringent waveguide modulates the generation of harmonics. The evolution of the polarization of a laser pulse propagating in a birefringent waveguide is calculated and is shown to periodically modulate the harmonic generation process. The optimum conditions for achieving quasi-phase-matching using this scheme are explored and the growth of the harmonic intensity as a function of experimental parameters is investigated."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4432","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":"2026-05-18T03:27:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+wulLVlQ3DTilLTqGXti/cjRCNDU1KrpXpTqBsn+6AMAQukGteqo2pWQ+UK0bYRjod104TX2AyVaW8hI91u/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T00:54:14.750846Z"},"content_sha256":"9e478c64f71e28b3b3214f792efda98d868a6a76b1aa3d0942cbcf907c5b87d8","schema_version":"1.0","event_id":"sha256:9e478c64f71e28b3b3214f792efda98d868a6a76b1aa3d0942cbcf907c5b87d8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IXTDEMDBSR47HXI3YOZ2OLF3RH/bundle.json","state_url":"https://pith.science/pith/IXTDEMDBSR47HXI3YOZ2OLF3RH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IXTDEMDBSR47HXI3YOZ2OLF3RH/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":"2026-06-23T00:54:14Z","links":{"resolver":"https://pith.science/pith/IXTDEMDBSR47HXI3YOZ2OLF3RH","bundle":"https://pith.science/pith/IXTDEMDBSR47HXI3YOZ2OLF3RH/bundle.json","state":"https://pith.science/pith/IXTDEMDBSR47HXI3YOZ2OLF3RH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IXTDEMDBSR47HXI3YOZ2OLF3RH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:IXTDEMDBSR47HXI3YOZ2OLF3RH","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":"82ed0085bc654698afd8d3618e4d555772d2693ebc77406dda30ca10717dcff7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-04-16T13:19:15Z","title_canon_sha256":"79a30c41e979c61b6750598d1838e5ef2d2eed7ef2262b5dda25f2096077721e"},"schema_version":"1.0","source":{"id":"1304.4432","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4432","created_at":"2026-05-18T03:27:53Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4432v1","created_at":"2026-05-18T03:27:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4432","created_at":"2026-05-18T03:27:53Z"},{"alias_kind":"pith_short_12","alias_value":"IXTDEMDBSR47","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IXTDEMDBSR47HXI3","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IXTDEMDB","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:9e478c64f71e28b3b3214f792efda98d868a6a76b1aa3d0942cbcf907c5b87d8","target":"graph","created_at":"2026-05-18T03:27:53Z","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":"A scheme for quasi-phase-matching high-harmonic generation is proposed in which polarization beating within a hollow core birefringent waveguide modulates the generation of harmonics. The evolution of the polarization of a laser pulse propagating in a birefringent waveguide is calculated and is shown to periodically modulate the harmonic generation process. The optimum conditions for achieving quasi-phase-matching using this scheme are explored and the growth of the harmonic intensity as a function of experimental parameters is investigated.","authors_text":"Kevin O'Keeffe, Lewis Z. Liu, Simon M. Hooker","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-04-16T13:19:15Z","title":"Quasi-phase-matching of high-order-harmonic generation using polarization beating in optical waveguides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4432","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:a9afa4b3c7f3badbe85ea173eac2e015591b4bf099e7b0a30fcfe30f19be8130","target":"record","created_at":"2026-05-18T03:27:53Z","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":"82ed0085bc654698afd8d3618e4d555772d2693ebc77406dda30ca10717dcff7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-04-16T13:19:15Z","title_canon_sha256":"79a30c41e979c61b6750598d1838e5ef2d2eed7ef2262b5dda25f2096077721e"},"schema_version":"1.0","source":{"id":"1304.4432","kind":"arxiv","version":1}},"canonical_sha256":"45e63230619479f3dd1bc3b3a72cbb89e97aed8d995905b21a1cda96086e5dc4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"45e63230619479f3dd1bc3b3a72cbb89e97aed8d995905b21a1cda96086e5dc4","first_computed_at":"2026-05-18T03:27:53.104919Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:53.104919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0iYY2Yu+gkw9PU1akwiIaiF1CG+rrLH80cbVluDFucsdzVKilmY6xEdDq1hzAN6gYlxY5jRzMqUvxxoXLIYOAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:53.105501Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.4432","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9afa4b3c7f3badbe85ea173eac2e015591b4bf099e7b0a30fcfe30f19be8130","sha256:9e478c64f71e28b3b3214f792efda98d868a6a76b1aa3d0942cbcf907c5b87d8"],"state_sha256":"24b503a86dafa7522202b4726190c4ad842136a5d843219df15715d49674ed00"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gsBvs2CzTnys0izgCP9qGmyhR+gGUtQQPMkJ6hKRfhPMO49jApsZuCQQathaEzgXmIwgbC4Ah2UFlfX545xiAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T00:54:14.752793Z","bundle_sha256":"ed74e8f45b17be7ada133eed6b079f842b6e3638b69eb148e00a5dff85b4fcf8"}}