{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DQAPMHFYBBBZZ25BMSCUTU5T2T","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":"4355d99e56090b3c17fb05b6732d003336ab4df62f50ca5ec2f3bab3e0465f8e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.optics","submitted_at":"2016-09-29T07:46:53Z","title_canon_sha256":"e436bb8e06162c47a2b67607cf8f73ea8ec183688baea5ff826be920996e61a3"},"schema_version":"1.0","source":{"id":"1609.09239","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.09239","created_at":"2026-05-18T00:47:10Z"},{"alias_kind":"arxiv_version","alias_value":"1609.09239v1","created_at":"2026-05-18T00:47:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.09239","created_at":"2026-05-18T00:47:10Z"},{"alias_kind":"pith_short_12","alias_value":"DQAPMHFYBBBZ","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DQAPMHFYBBBZZ25B","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DQAPMHFY","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:a378f173a61b7a5d759b7257a6ae47f1fd28d691cba589955942fd6e33108745","target":"graph","created_at":"2026-05-18T00:47:10Z","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":"The self-referenced spectral interferometry (SRSI) technique, which is usually used for microjoule-level femtosecond pulses characterization, is improved to characterize weak femtosecond pulses with nanojoule based on the transient-grating effect. Both femtosecond pulses from an amplifier with 3 nJ per pulse at 1 kHz repetition rates and femtosecond pulses from an oscillator with less than 0.5 nJ per pulse at 84 MHz repetition rates are successfully characterized. Furthermore, through a special design, the optical setup of the device is even smaller than a palm which will makes it simple and c","authors_text":"Jun Liu, Peng Wang, Ruxin Li, Xiong Shen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.optics","submitted_at":"2016-09-29T07:46:53Z","title":"Compact transient-grating self-referenced spectral interferometry for sub-nanojoule femtosecond pulses characterization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.09239","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:ad3b16cb9edd06c27ad46be8e7ea0e7e59e17e0cd0e7bc3bf8ffb15ea0b2369b","target":"record","created_at":"2026-05-18T00:47:10Z","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":"4355d99e56090b3c17fb05b6732d003336ab4df62f50ca5ec2f3bab3e0465f8e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.optics","submitted_at":"2016-09-29T07:46:53Z","title_canon_sha256":"e436bb8e06162c47a2b67607cf8f73ea8ec183688baea5ff826be920996e61a3"},"schema_version":"1.0","source":{"id":"1609.09239","kind":"arxiv","version":1}},"canonical_sha256":"1c00f61cb808439ceba1648549d3b3d4c073420fb0e1303761322e756b56ff4b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c00f61cb808439ceba1648549d3b3d4c073420fb0e1303761322e756b56ff4b","first_computed_at":"2026-05-18T00:47:10.275845Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:10.275845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e196SaRYbDpUiN7RCC3q+oNnJMUsCeE9nVdCorlFw5bSURHAUOdfpwQwfWVga0EWqEbMSCgHvl81niLe+d0bAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:10.276399Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.09239","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad3b16cb9edd06c27ad46be8e7ea0e7e59e17e0cd0e7bc3bf8ffb15ea0b2369b","sha256:a378f173a61b7a5d759b7257a6ae47f1fd28d691cba589955942fd6e33108745"],"state_sha256":"608017788690025db9d85de3982b0738900eabe4d9d799c8dedba50b73a7d167"}