{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:CVDK37FKBDS5N674RMQH7N74Y5","short_pith_number":"pith:CVDK37FK","canonical_record":{"source":{"id":"1106.1571","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T14:30:50Z","cross_cats_sorted":[],"title_canon_sha256":"c882f55c717d9c22127f6a97cec6ab89ee54d07e85dd1b1578acc94283819abe","abstract_canon_sha256":"0e2f38a41437942ce904191c0511e376c31a3caf5ed2fab0ad0f4db949d31efa"},"schema_version":"1.0"},"canonical_sha256":"1546adfcaa08e5d6fbfc8b207fb7fcc7453b4413f2027ac9269d47fd750f9608","source":{"kind":"arxiv","id":"1106.1571","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.1571","created_at":"2026-05-18T02:01:40Z"},{"alias_kind":"arxiv_version","alias_value":"1106.1571v1","created_at":"2026-05-18T02:01:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.1571","created_at":"2026-05-18T02:01:40Z"},{"alias_kind":"pith_short_12","alias_value":"CVDK37FKBDS5","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"CVDK37FKBDS5N674","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"CVDK37FK","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:CVDK37FKBDS5N674RMQH7N74Y5","target":"record","payload":{"canonical_record":{"source":{"id":"1106.1571","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T14:30:50Z","cross_cats_sorted":[],"title_canon_sha256":"c882f55c717d9c22127f6a97cec6ab89ee54d07e85dd1b1578acc94283819abe","abstract_canon_sha256":"0e2f38a41437942ce904191c0511e376c31a3caf5ed2fab0ad0f4db949d31efa"},"schema_version":"1.0"},"canonical_sha256":"1546adfcaa08e5d6fbfc8b207fb7fcc7453b4413f2027ac9269d47fd750f9608","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:40.817224Z","signature_b64":"PVwfe4LzpIVqSUnsofzm0UDLICPLd7MVBE4GT8Mx5OLKoVdqVzwlgLC+ioQx1xMB8iQDc+aVtaX5kJ8QMq2vBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1546adfcaa08e5d6fbfc8b207fb7fcc7453b4413f2027ac9269d47fd750f9608","last_reissued_at":"2026-05-18T02:01:40.816708Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:40.816708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.1571","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":"2026-05-18T02:01:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"opnAPtxL8MAVDHBUYl4bQVHuuTbRjrYMU9ZyUW/hD1T2IXkqPMq/7Ow1XKSTKCiMb+a1AHS7Z03hVLY2LlMGCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:36:03.936229Z"},"content_sha256":"8dd903040f2c75c25e4ae7805d51336f6d3b565e80069a38757b47d13c99316e","schema_version":"1.0","event_id":"sha256:8dd903040f2c75c25e4ae7805d51336f6d3b565e80069a38757b47d13c99316e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:CVDK37FKBDS5N674RMQH7N74Y5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Orbital Angular Momentum in Noncollinear Second Harmonic Generation by off-axis vortex beams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Concita Sibilia, Fabio Antonio Bovino, Matteo Braccini, Maurizio Giardina","submitted_at":"2011-06-08T14:30:50Z","abstract_excerpt":"We experimentally study the behavior of orbital angular momentum (OAM) of light in a noncollinear second harmonic generation (SHG) process. The experiment is performed by using a type I BBO crystal under phase matching conditions with femtosecond pumping fields at 830 nm. Two specular off-axis vortex beams carrying fractional orbital angular momentum at the fundamental frequency (FF) are used. We analyze the behavior of the OAM of the SH signal when the optical vortex of each input field at the FF is displaced from the beam's axis. We obtain different spatial configurations of the SH field, al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.1571","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":"2026-05-18T02:01:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7jbdG/0LbIgZw8WflJ3bj8dtGg7EyW6Qm/pvo1obiibbuKe5L0wSlc22slSeaHsYQzTgsxgCwBTC3kQ57vT/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:36:03.936837Z"},"content_sha256":"b52eee24d792689f7c62b3f9670cd4d651d3ae5d23881c5eb57120135662bcd2","schema_version":"1.0","event_id":"sha256:b52eee24d792689f7c62b3f9670cd4d651d3ae5d23881c5eb57120135662bcd2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CVDK37FKBDS5N674RMQH7N74Y5/bundle.json","state_url":"https://pith.science/pith/CVDK37FKBDS5N674RMQH7N74Y5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CVDK37FKBDS5N674RMQH7N74Y5/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":"2026-05-28T08:36:03Z","links":{"resolver":"https://pith.science/pith/CVDK37FKBDS5N674RMQH7N74Y5","bundle":"https://pith.science/pith/CVDK37FKBDS5N674RMQH7N74Y5/bundle.json","state":"https://pith.science/pith/CVDK37FKBDS5N674RMQH7N74Y5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CVDK37FKBDS5N674RMQH7N74Y5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:CVDK37FKBDS5N674RMQH7N74Y5","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":"0e2f38a41437942ce904191c0511e376c31a3caf5ed2fab0ad0f4db949d31efa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T14:30:50Z","title_canon_sha256":"c882f55c717d9c22127f6a97cec6ab89ee54d07e85dd1b1578acc94283819abe"},"schema_version":"1.0","source":{"id":"1106.1571","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.1571","created_at":"2026-05-18T02:01:40Z"},{"alias_kind":"arxiv_version","alias_value":"1106.1571v1","created_at":"2026-05-18T02:01:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.1571","created_at":"2026-05-18T02:01:40Z"},{"alias_kind":"pith_short_12","alias_value":"CVDK37FKBDS5","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"CVDK37FKBDS5N674","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"CVDK37FK","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:b52eee24d792689f7c62b3f9670cd4d651d3ae5d23881c5eb57120135662bcd2","target":"graph","created_at":"2026-05-18T02:01:40Z","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 experimentally study the behavior of orbital angular momentum (OAM) of light in a noncollinear second harmonic generation (SHG) process. The experiment is performed by using a type I BBO crystal under phase matching conditions with femtosecond pumping fields at 830 nm. Two specular off-axis vortex beams carrying fractional orbital angular momentum at the fundamental frequency (FF) are used. We analyze the behavior of the OAM of the SH signal when the optical vortex of each input field at the FF is displaced from the beam's axis. We obtain different spatial configurations of the SH field, al","authors_text":"Concita Sibilia, Fabio Antonio Bovino, Matteo Braccini, Maurizio Giardina","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T14:30:50Z","title":"Orbital Angular Momentum in Noncollinear Second Harmonic Generation by off-axis vortex beams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.1571","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":"sha256:8dd903040f2c75c25e4ae7805d51336f6d3b565e80069a38757b47d13c99316e","target":"record","created_at":"2026-05-18T02:01:40Z","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":"0e2f38a41437942ce904191c0511e376c31a3caf5ed2fab0ad0f4db949d31efa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T14:30:50Z","title_canon_sha256":"c882f55c717d9c22127f6a97cec6ab89ee54d07e85dd1b1578acc94283819abe"},"schema_version":"1.0","source":{"id":"1106.1571","kind":"arxiv","version":1}},"canonical_sha256":"1546adfcaa08e5d6fbfc8b207fb7fcc7453b4413f2027ac9269d47fd750f9608","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1546adfcaa08e5d6fbfc8b207fb7fcc7453b4413f2027ac9269d47fd750f9608","first_computed_at":"2026-05-18T02:01:40.816708Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:40.816708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PVwfe4LzpIVqSUnsofzm0UDLICPLd7MVBE4GT8Mx5OLKoVdqVzwlgLC+ioQx1xMB8iQDc+aVtaX5kJ8QMq2vBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:40.817224Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.1571","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8dd903040f2c75c25e4ae7805d51336f6d3b565e80069a38757b47d13c99316e","sha256:b52eee24d792689f7c62b3f9670cd4d651d3ae5d23881c5eb57120135662bcd2"],"state_sha256":"6cad04c5b75a4456c831a925928d1d530391ebe29610cf074322dd1e772da5a5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z2WSGm13IBH5lKjec7Cf4Ua3Yhk4txbRC4+dyQhgzo43WQ+/Qyvwne7kGfE8Hj1uCG648w/bkkAgZw6KJACKBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:36:03.939782Z","bundle_sha256":"d3fd472af50844a1825df01f342026b5b654d06c4a564a6ebb676304c83ed2cd"}}