{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ZCZOCDCXLHEEGYE67KDKUULTSB","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":"943ad1f26b3ec41a476224052cd162b95bddf56e52a61122c67e1016d00965b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-07-31T23:56:52Z","title_canon_sha256":"9f0cde8ed3d2c56d2404dbe4719762e2a782c6123467f7d4a18944ae4804318a"},"schema_version":"1.0","source":{"id":"1708.00104","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.00104","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"arxiv_version","alias_value":"1708.00104v1","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.00104","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"pith_short_12","alias_value":"ZCZOCDCXLHEE","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZCZOCDCXLHEEGYE6","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZCZOCDCX","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:20c37146eb095bafb1a10f11cdd75b16ddd9b9db37afeeb264a193d2b7eb44b6","target":"graph","created_at":"2026-05-18T00:25:56Z","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 report on experimental demonstration of high power, ultrafast, high repetition rate vortex beam source tunable in the near-IR wavelength range. Based on single-pass optical parametric generation of Yb-fiber laser of vortex order lp=1 in a 50 mm long MgO doped periodically poled LiNbO3 crystal, the source produces signal beam in vortex profile of order ls=1 across 1433-1553 nm. Additionally, the source produces broadband idler radiation tunable across 3379-4132 nm in the Gaussian beam profile. We observed that the vortex profile of the pump beam is always transferred to the signal beam due t","authors_text":"A. Aadhi, G. K. Samanta","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-07-31T23:56:52Z","title":"High-power, high repetition rate, tunable, ultrafast vortex beam in the near-infrared"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.00104","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":"sha256:79a9e2b09eed1d18cd5c8d0e2b3dc784d1824ac82d51b1633ac9e2ceea1bd585","target":"record","created_at":"2026-05-18T00:25:56Z","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":"943ad1f26b3ec41a476224052cd162b95bddf56e52a61122c67e1016d00965b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-07-31T23:56:52Z","title_canon_sha256":"9f0cde8ed3d2c56d2404dbe4719762e2a782c6123467f7d4a18944ae4804318a"},"schema_version":"1.0","source":{"id":"1708.00104","kind":"arxiv","version":1}},"canonical_sha256":"c8b2e10c5759c843609efa86aa5173906418e4b256b9ea4873de6f90994f6492","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8b2e10c5759c843609efa86aa5173906418e4b256b9ea4873de6f90994f6492","first_computed_at":"2026-05-18T00:25:56.103035Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:56.103035Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7bpGl2eG60DxyS2rfbciBCMQ/Xzc9zZgcxsGDNNfyQvjEDUni4NbSxL28t9vCTQMy2SMSqdOMlqj09l/CIhTBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:56.103770Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.00104","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79a9e2b09eed1d18cd5c8d0e2b3dc784d1824ac82d51b1633ac9e2ceea1bd585","sha256:20c37146eb095bafb1a10f11cdd75b16ddd9b9db37afeeb264a193d2b7eb44b6"],"state_sha256":"8429ec307e4b7f59bca9752632d98c7e2e4431ced8a9ee9224a5f0941287394d"}