{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7CNTC4NJT4MMXL3AOLECEV7MU7","short_pith_number":"pith:7CNTC4NJ","canonical_record":{"source":{"id":"1405.7641","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-05-29T18:18:39Z","cross_cats_sorted":[],"title_canon_sha256":"11381768e747c8e94cbd3674afdcced89357c1ab5626f0804ed0afc0fa9709a4","abstract_canon_sha256":"91591f107834d440c167555536fe8218bb710e92f3d79b4010cae51d4ed3ab6c"},"schema_version":"1.0"},"canonical_sha256":"f89b3171a99f18cbaf6072c82257eca7d7570aeea31eada6ce0439e3f10087b3","source":{"kind":"arxiv","id":"1405.7641","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.7641","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"arxiv_version","alias_value":"1405.7641v1","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7641","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"pith_short_12","alias_value":"7CNTC4NJT4MM","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"7CNTC4NJT4MMXL3A","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"7CNTC4NJ","created_at":"2026-05-18T12:28:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7CNTC4NJT4MMXL3AOLECEV7MU7","target":"record","payload":{"canonical_record":{"source":{"id":"1405.7641","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-05-29T18:18:39Z","cross_cats_sorted":[],"title_canon_sha256":"11381768e747c8e94cbd3674afdcced89357c1ab5626f0804ed0afc0fa9709a4","abstract_canon_sha256":"91591f107834d440c167555536fe8218bb710e92f3d79b4010cae51d4ed3ab6c"},"schema_version":"1.0"},"canonical_sha256":"f89b3171a99f18cbaf6072c82257eca7d7570aeea31eada6ce0439e3f10087b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:04.905124Z","signature_b64":"xn1jQRk4Ig7Ef8khrt3LN/fa5cst/ZzkH9Gflcbi5B9Q5HoJ33R/QrJOEcxtuqFF9W7KouZBX8Oiz1QA92t2AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f89b3171a99f18cbaf6072c82257eca7d7570aeea31eada6ce0439e3f10087b3","last_reissued_at":"2026-05-18T01:43:04.904749Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:04.904749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.7641","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":"2026-05-18T01:43:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cv17rnUTjrPDt/+E4RnXJpgQZGmAiFds02TQ1l9HLB2a09sx3lL2xDj6I0T5MxIQfbw1p2yEZ+TU3t2CmAguBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T21:55:23.832505Z"},"content_sha256":"86edf9e0508ad59cea0e3848cc9ecdcbbf55bf9a4b7d4924094da860e387285b","schema_version":"1.0","event_id":"sha256:86edf9e0508ad59cea0e3848cc9ecdcbbf55bf9a4b7d4924094da860e387285b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7CNTC4NJT4MMXL3AOLECEV7MU7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dispersion-induced dynamics of coupled modes in a semiconductor laser with saturable absorption","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Finbarr O'Callaghan, Simon Osborne, Stephen O'Brien","submitted_at":"2014-05-29T18:18:39Z","abstract_excerpt":"We present an experimental and theoretical study of modal nonlinear dynamics in a specially designed dual-mode semiconductor Fabry-Perot laser with a saturable absorber. At zero bias applied to the absorber section, we have found that with increasing device current, single mode self-pulsations evolve into a complex dynamical state where the total intensity experiences regular bursts of pulsations on a constant background. Spectrally resolved measurements reveal that in this state the individual modes of the device can follow highly symmetric but oppositely directed spiralling orbits. Using a g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7641","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":"2026-05-18T01:43:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2YS7E8sh0Reb+Rk6xVuLLsk+FHG8Z3zXh74/8RMbYoxqv8BQtIDAtauI8+u5OV+jx6I445taxbn66P63FFT4DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T21:55:23.832841Z"},"content_sha256":"8927769cb88120dbef7ec0953cae3e4f59c28eda4e42f3395e1038c2c46135c0","schema_version":"1.0","event_id":"sha256:8927769cb88120dbef7ec0953cae3e4f59c28eda4e42f3395e1038c2c46135c0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7CNTC4NJT4MMXL3AOLECEV7MU7/bundle.json","state_url":"https://pith.science/pith/7CNTC4NJT4MMXL3AOLECEV7MU7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7CNTC4NJT4MMXL3AOLECEV7MU7/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":"2026-06-24T21:55:23Z","links":{"resolver":"https://pith.science/pith/7CNTC4NJT4MMXL3AOLECEV7MU7","bundle":"https://pith.science/pith/7CNTC4NJT4MMXL3AOLECEV7MU7/bundle.json","state":"https://pith.science/pith/7CNTC4NJT4MMXL3AOLECEV7MU7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7CNTC4NJT4MMXL3AOLECEV7MU7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7CNTC4NJT4MMXL3AOLECEV7MU7","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":"91591f107834d440c167555536fe8218bb710e92f3d79b4010cae51d4ed3ab6c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-05-29T18:18:39Z","title_canon_sha256":"11381768e747c8e94cbd3674afdcced89357c1ab5626f0804ed0afc0fa9709a4"},"schema_version":"1.0","source":{"id":"1405.7641","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.7641","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"arxiv_version","alias_value":"1405.7641v1","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7641","created_at":"2026-05-18T01:43:04Z"},{"alias_kind":"pith_short_12","alias_value":"7CNTC4NJT4MM","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"7CNTC4NJT4MMXL3A","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"7CNTC4NJ","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:8927769cb88120dbef7ec0953cae3e4f59c28eda4e42f3395e1038c2c46135c0","target":"graph","created_at":"2026-05-18T01:43:04Z","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 present an experimental and theoretical study of modal nonlinear dynamics in a specially designed dual-mode semiconductor Fabry-Perot laser with a saturable absorber. At zero bias applied to the absorber section, we have found that with increasing device current, single mode self-pulsations evolve into a complex dynamical state where the total intensity experiences regular bursts of pulsations on a constant background. Spectrally resolved measurements reveal that in this state the individual modes of the device can follow highly symmetric but oppositely directed spiralling orbits. Using a g","authors_text":"Finbarr O'Callaghan, Simon Osborne, Stephen O'Brien","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-05-29T18:18:39Z","title":"Dispersion-induced dynamics of coupled modes in a semiconductor laser with saturable absorption"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7641","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":"sha256:86edf9e0508ad59cea0e3848cc9ecdcbbf55bf9a4b7d4924094da860e387285b","target":"record","created_at":"2026-05-18T01:43:04Z","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":"91591f107834d440c167555536fe8218bb710e92f3d79b4010cae51d4ed3ab6c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-05-29T18:18:39Z","title_canon_sha256":"11381768e747c8e94cbd3674afdcced89357c1ab5626f0804ed0afc0fa9709a4"},"schema_version":"1.0","source":{"id":"1405.7641","kind":"arxiv","version":1}},"canonical_sha256":"f89b3171a99f18cbaf6072c82257eca7d7570aeea31eada6ce0439e3f10087b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f89b3171a99f18cbaf6072c82257eca7d7570aeea31eada6ce0439e3f10087b3","first_computed_at":"2026-05-18T01:43:04.904749Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:04.904749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xn1jQRk4Ig7Ef8khrt3LN/fa5cst/ZzkH9Gflcbi5B9Q5HoJ33R/QrJOEcxtuqFF9W7KouZBX8Oiz1QA92t2AA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:04.905124Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.7641","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86edf9e0508ad59cea0e3848cc9ecdcbbf55bf9a4b7d4924094da860e387285b","sha256:8927769cb88120dbef7ec0953cae3e4f59c28eda4e42f3395e1038c2c46135c0"],"state_sha256":"77bfdfb7bb4a98997a2ae57c51e59cbb3e3cb9f63ff9b94074055b5dc4aaf6d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lXSPeE6Bu4aYXepGk7yBBKk4N2GUxv+JOoGsEOnsuIVl/wv/ca8kPkeNIplHJ27dCCFu1WzTcUYQrbsOGu6QAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T21:55:23.834784Z","bundle_sha256":"5d6fcc3d37883e9e48066f2ab6a608821d51cfdc639597db98ae34f88c6a8bb1"}}