{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZKRMVQUYIL35ENSVBXZX3NVR57","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":"50865b5f7f4a32444e1ed024aca11bec2b6e61369603dee408903ce8583af8e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-14T08:14:55Z","title_canon_sha256":"b345d31b4aee4bc5f5d641544cc90ce035f03e82fcf42f374a3df1b7e033a951"},"schema_version":"1.0","source":{"id":"1902.05256","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.05256","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"arxiv_version","alias_value":"1902.05256v1","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.05256","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"pith_short_12","alias_value":"ZKRMVQUYIL35","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZKRMVQUYIL35ENSV","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZKRMVQUY","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:d4f60428e377ced1eceae1a86d1fbb965c7653e1cf508b288f6b85f5d9812c37","target":"graph","created_at":"2026-05-17T23:47:26Z","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 single-shot characterization of the temporal contrast of a petawatt laser pulse with a high dynamic-range, is important not only for improving conditions of the petawatt laser facility itself, but also for various high-intensity laser physics experiments, which is still a difficult problem. In this study, a new idea for improving the dynamic-range of a single-shot temporal contrast measurement using novel temporal contrast reduction techniques is proposed. The proof-of-principle experiments applying single stage of pulse stretching, anti-saturated absorption, or optical Kerr effect successfu","authors_text":"Jingxin Zhu, Jun Liu, Peng Wang, Ruxin Li, Xiong Shen, Yuxia Zhao, Zhe Si","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-14T08:14:55Z","title":"Temporal contrast reduction techniques for high dynamic-range single-shot temporal contrast measurement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.05256","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":"sha256:9cfb74af14904919d8a06abdffc5d646b78c3cd70d5eb895b9a85a19ad4d7078","target":"record","created_at":"2026-05-17T23:47:26Z","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":"50865b5f7f4a32444e1ed024aca11bec2b6e61369603dee408903ce8583af8e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-14T08:14:55Z","title_canon_sha256":"b345d31b4aee4bc5f5d641544cc90ce035f03e82fcf42f374a3df1b7e033a951"},"schema_version":"1.0","source":{"id":"1902.05256","kind":"arxiv","version":1}},"canonical_sha256":"caa2cac29842f7d236550df37db6b1efe640ea27de708b3840db14e204f3d90a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"caa2cac29842f7d236550df37db6b1efe640ea27de708b3840db14e204f3d90a","first_computed_at":"2026-05-17T23:47:26.089410Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:26.089410Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VdjlJV+gknsTuB1ccCW4PEgoupQJ44rzhVejUcgppv8WWNrgrUU1ZKXfmN9FNV6fp6WGostxpTOgq4uj7cEzCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:26.090095Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.05256","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9cfb74af14904919d8a06abdffc5d646b78c3cd70d5eb895b9a85a19ad4d7078","sha256:d4f60428e377ced1eceae1a86d1fbb965c7653e1cf508b288f6b85f5d9812c37"],"state_sha256":"4771915de5bf51fe71cb494bc20477e07805fc58ce79e8cbfc4cc411e5058792"}