{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JSV6NYZO2UFXUR2EUR6464N6P3","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":"442b5525a7f9391c59a1674e74984061dece64e12f8c1b30f9d443db5bbc4f5a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-06-07T11:58:59Z","title_canon_sha256":"ffc9d8a0088992b2662af5a304ca40a84000f41525009a628eb034e3183022cc"},"schema_version":"1.0","source":{"id":"1906.03029","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.03029","created_at":"2026-07-05T00:13:47Z"},{"alias_kind":"arxiv_version","alias_value":"1906.03029v1","created_at":"2026-07-05T00:13:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.03029","created_at":"2026-07-05T00:13:47Z"},{"alias_kind":"pith_short_12","alias_value":"JSV6NYZO2UFX","created_at":"2026-07-05T00:13:47Z"},{"alias_kind":"pith_short_16","alias_value":"JSV6NYZO2UFXUR2E","created_at":"2026-07-05T00:13:47Z"},{"alias_kind":"pith_short_8","alias_value":"JSV6NYZO","created_at":"2026-07-05T00:13:47Z"}],"graph_snapshots":[{"event_id":"sha256:5a2fe46c34f3970e7c9ba8f30506895dbda75401652261896322313e68ea8b15","target":"graph","created_at":"2026-07-05T00:13:47Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1906.03029/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate dual-comb generation from an all-polarization-maintaining dual-color ytterbium (Yb) fiber laser. Two pulse trains with center wavelengths at 1030 nm and 1060 nm respectively are generated within the same laser cavity with a repetition rate around 77 MHz. Dual-color operation is induced using a tunable mechanical spectral filter, which cuts the gain spectrum into two spectral regions that can be independently mode-locked. Spectral overlap of the two pulse trains is achieved outside the laser cavity by amplifying the 1030-nm pulses and broadening them in a nonlinear fiber. Spatial","authors_text":"Aline S. Mayer, Chen Li, Christoph M. Heyl, Gar-Wing Truong, Georg Winkler, Ingmar Hartl, Jakob Fellinger, Oliver H. Heckl, Stefan Droste, Wilfrid Grosinger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-06-07T11:58:59Z","title":"Tunable dual-comb from an all-polarization-maintaining single-cavity dual-color Yb:fiber laser"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.03029","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":"sha256:888aaeaf5a2be5e77e72dd3988fdb9ea4d6ecef78e0c91418c64578819be0c5c","target":"record","created_at":"2026-07-05T00:13:47Z","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":"442b5525a7f9391c59a1674e74984061dece64e12f8c1b30f9d443db5bbc4f5a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-06-07T11:58:59Z","title_canon_sha256":"ffc9d8a0088992b2662af5a304ca40a84000f41525009a628eb034e3183022cc"},"schema_version":"1.0","source":{"id":"1906.03029","kind":"arxiv","version":1}},"canonical_sha256":"4cabe6e32ed50b7a4744a47dcf71be7eeff780adb5a61f815f7f14c75e036440","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4cabe6e32ed50b7a4744a47dcf71be7eeff780adb5a61f815f7f14c75e036440","first_computed_at":"2026-07-05T00:13:47.742304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:13:47.742304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v7CIc75erxQpPunNK7CaFihWRN0Vni7UhovC4YpkRXqP6B5I6gZZDo31kyPrSyhzBW2ikwgUMBRj6BitZRa/Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:13:47.742850Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.03029","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:888aaeaf5a2be5e77e72dd3988fdb9ea4d6ecef78e0c91418c64578819be0c5c","sha256:5a2fe46c34f3970e7c9ba8f30506895dbda75401652261896322313e68ea8b15"],"state_sha256":"5046bcab8d16dd456c483d60c8dd70c2bc6ef10e8b2ee573dc57662c6665301c"}