{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:2IY2IXKSFDO323RH55AN6HL27S","short_pith_number":"pith:2IY2IXKS","canonical_record":{"source":{"id":"1609.06443","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-21T07:34:50Z","cross_cats_sorted":[],"title_canon_sha256":"1b9b0b440e1e2afa9dc7aac220a64e1d9e08104908623ae648efc44187fe6ae6","abstract_canon_sha256":"a52c4f2a3cddc88cd5c6833f1e473a40cba09837f2d23c58c0419c461f181f76"},"schema_version":"1.0"},"canonical_sha256":"d231a45d5228ddbd6e27ef40df1d7afcb71863917de248d463287b8d9b1a6ab1","source":{"kind":"arxiv","id":"1609.06443","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.06443","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"arxiv_version","alias_value":"1609.06443v1","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.06443","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"pith_short_12","alias_value":"2IY2IXKSFDO3","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2IY2IXKSFDO323RH","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2IY2IXKS","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:2IY2IXKSFDO323RH55AN6HL27S","target":"record","payload":{"canonical_record":{"source":{"id":"1609.06443","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-21T07:34:50Z","cross_cats_sorted":[],"title_canon_sha256":"1b9b0b440e1e2afa9dc7aac220a64e1d9e08104908623ae648efc44187fe6ae6","abstract_canon_sha256":"a52c4f2a3cddc88cd5c6833f1e473a40cba09837f2d23c58c0419c461f181f76"},"schema_version":"1.0"},"canonical_sha256":"d231a45d5228ddbd6e27ef40df1d7afcb71863917de248d463287b8d9b1a6ab1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:56.793443Z","signature_b64":"oFkpiEMFrPxjud9DMHCi6FKQeXkCSIXxi/92wGOdkB4K/EWvklYwNLdGUGAh5z+76Kq4bbHC3PeTQIOQL4VqAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d231a45d5228ddbd6e27ef40df1d7afcb71863917de248d463287b8d9b1a6ab1","last_reissued_at":"2026-05-18T00:16:56.792797Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:56.792797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.06443","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":"2026-05-18T00:16:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i6jtQN7LRTsRup3qL0GNunGQeaeLTdSrWrF8Tyloz+dOnO0kOO58lTRTg0S9azCxYtlG862wy8nAl0OCPNBJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T14:14:52.963531Z"},"content_sha256":"cbf52622c0c98e56015b7f323b8f2a6979b72cf2318f04a5db7d9305249496de","schema_version":"1.0","event_id":"sha256:cbf52622c0c98e56015b7f323b8f2a6979b72cf2318f04a5db7d9305249496de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:2IY2IXKSFDO323RH55AN6HL27S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Signal line shapes of Fourier transform cavity-enhanced frequency modulation spectroscopy with optical frequency combs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Aleksandra Foltynowicz, Alexandra C. Johansson, Amir Khodabakhsh, Lucile Rutkowski","submitted_at":"2016-09-21T07:34:50Z","abstract_excerpt":"We present a thorough analysis of the signal line shapes of Fourier transform-based noise-immune cavity-enhanced optical frequency comb spectroscopy (NICE-OFCS). We discuss the signal dependence on the ratio of the modulation frequency, f${_m}$, to the molecular line width, {\\Gamma}. We compare a full model of the signals and a simplified absorption-like analytical model that has high accuracy for low f${_m}$/{\\Gamma} ratios and is much faster to compute. We verify the theory experimentally by measuring and fitting NICE-OFCS spectra of CO${_2}$ at 1575 nm using a system based on an Er:fiber fe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.06443","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":"2026-05-18T00:16:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l/LlWHkT68eiWNBpg69Ll/+SnoJjl2T+UM0KpRhXlsbjnOK4lv85DQAFGoQIG4BUiJlBPnlQ1yVUKLGrv5gwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T14:14:52.963911Z"},"content_sha256":"798f66c3064c0c9e06711624f98d1d43e270c193379fd5443e3d236d8ff01faf","schema_version":"1.0","event_id":"sha256:798f66c3064c0c9e06711624f98d1d43e270c193379fd5443e3d236d8ff01faf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2IY2IXKSFDO323RH55AN6HL27S/bundle.json","state_url":"https://pith.science/pith/2IY2IXKSFDO323RH55AN6HL27S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2IY2IXKSFDO323RH55AN6HL27S/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":"2026-06-22T14:14:52Z","links":{"resolver":"https://pith.science/pith/2IY2IXKSFDO323RH55AN6HL27S","bundle":"https://pith.science/pith/2IY2IXKSFDO323RH55AN6HL27S/bundle.json","state":"https://pith.science/pith/2IY2IXKSFDO323RH55AN6HL27S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2IY2IXKSFDO323RH55AN6HL27S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2IY2IXKSFDO323RH55AN6HL27S","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":"a52c4f2a3cddc88cd5c6833f1e473a40cba09837f2d23c58c0419c461f181f76","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-21T07:34:50Z","title_canon_sha256":"1b9b0b440e1e2afa9dc7aac220a64e1d9e08104908623ae648efc44187fe6ae6"},"schema_version":"1.0","source":{"id":"1609.06443","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.06443","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"arxiv_version","alias_value":"1609.06443v1","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.06443","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"pith_short_12","alias_value":"2IY2IXKSFDO3","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2IY2IXKSFDO323RH","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2IY2IXKS","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:798f66c3064c0c9e06711624f98d1d43e270c193379fd5443e3d236d8ff01faf","target":"graph","created_at":"2026-05-18T00:16:56Z","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 present a thorough analysis of the signal line shapes of Fourier transform-based noise-immune cavity-enhanced optical frequency comb spectroscopy (NICE-OFCS). We discuss the signal dependence on the ratio of the modulation frequency, f${_m}$, to the molecular line width, {\\Gamma}. We compare a full model of the signals and a simplified absorption-like analytical model that has high accuracy for low f${_m}$/{\\Gamma} ratios and is much faster to compute. We verify the theory experimentally by measuring and fitting NICE-OFCS spectra of CO${_2}$ at 1575 nm using a system based on an Er:fiber fe","authors_text":"Aleksandra Foltynowicz, Alexandra C. Johansson, Amir Khodabakhsh, Lucile Rutkowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-21T07:34:50Z","title":"Signal line shapes of Fourier transform cavity-enhanced frequency modulation spectroscopy with optical frequency combs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.06443","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:cbf52622c0c98e56015b7f323b8f2a6979b72cf2318f04a5db7d9305249496de","target":"record","created_at":"2026-05-18T00:16:56Z","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":"a52c4f2a3cddc88cd5c6833f1e473a40cba09837f2d23c58c0419c461f181f76","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-21T07:34:50Z","title_canon_sha256":"1b9b0b440e1e2afa9dc7aac220a64e1d9e08104908623ae648efc44187fe6ae6"},"schema_version":"1.0","source":{"id":"1609.06443","kind":"arxiv","version":1}},"canonical_sha256":"d231a45d5228ddbd6e27ef40df1d7afcb71863917de248d463287b8d9b1a6ab1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d231a45d5228ddbd6e27ef40df1d7afcb71863917de248d463287b8d9b1a6ab1","first_computed_at":"2026-05-18T00:16:56.792797Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:56.792797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oFkpiEMFrPxjud9DMHCi6FKQeXkCSIXxi/92wGOdkB4K/EWvklYwNLdGUGAh5z+76Kq4bbHC3PeTQIOQL4VqAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:56.793443Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.06443","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbf52622c0c98e56015b7f323b8f2a6979b72cf2318f04a5db7d9305249496de","sha256:798f66c3064c0c9e06711624f98d1d43e270c193379fd5443e3d236d8ff01faf"],"state_sha256":"e0e5a7c94adfe0de650d7b49c3bb04832b8bbe448fd645d0b0c62b081647ad8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yMvpwYMPeDXleucU1xKXHtnWnvrmXOQTqivgkBjsKuTZik6Xe05T3mWm3iGqsR8/U15xqSSv3er0Xtt5h3tnCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T14:14:52.966080Z","bundle_sha256":"26825c98fc77375bce08b9c219ebb6e3d560f03659e22832ca6bfadcc3a0bd21"}}