{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:WX2TIV2ZQ3BM5SSXUA5NEILQ74","short_pith_number":"pith:WX2TIV2Z","canonical_record":{"source":{"id":"1208.4155","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-08-21T01:11:46Z","cross_cats_sorted":[],"title_canon_sha256":"e8d0ff4fdf79eeda7fd9a4dbbe1b2857840521575c8739a3b71109291ae1ee13","abstract_canon_sha256":"9ae80dc8270f9bd7a96dd0bebf8edb2d5d45656f881912f6b41f3e1a8acac137"},"schema_version":"1.0"},"canonical_sha256":"b5f534575986c2ceca57a03ad22170ff27410283b89e80aa795a7d8224ff3e3b","source":{"kind":"arxiv","id":"1208.4155","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.4155","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"arxiv_version","alias_value":"1208.4155v1","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.4155","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"pith_short_12","alias_value":"WX2TIV2ZQ3BM","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"WX2TIV2ZQ3BM5SSX","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"WX2TIV2Z","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:WX2TIV2ZQ3BM5SSXUA5NEILQ74","target":"record","payload":{"canonical_record":{"source":{"id":"1208.4155","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-08-21T01:11:46Z","cross_cats_sorted":[],"title_canon_sha256":"e8d0ff4fdf79eeda7fd9a4dbbe1b2857840521575c8739a3b71109291ae1ee13","abstract_canon_sha256":"9ae80dc8270f9bd7a96dd0bebf8edb2d5d45656f881912f6b41f3e1a8acac137"},"schema_version":"1.0"},"canonical_sha256":"b5f534575986c2ceca57a03ad22170ff27410283b89e80aa795a7d8224ff3e3b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:43:41.844980Z","signature_b64":"qi7rE/cKo/7uaxvFKFq8FHHj3I7nSRC5ENOQtJVKJvfgMBmw/Hkiw2+9noT5CwmXdQ9NKWi3NcjXBGi0XcZcBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5f534575986c2ceca57a03ad22170ff27410283b89e80aa795a7d8224ff3e3b","last_reissued_at":"2026-05-18T03:43:41.844189Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:43:41.844189Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.4155","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":"2026-05-18T03:43:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vZi1EI2u9ScV2+3hnrs1KRwBJAdkzkElsCfs3gh+r+gugE66JEsTtDdZRWzbdl+mNisW+IbuXkbjeQaJu815CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T11:33:49.098620Z"},"content_sha256":"2061575616be253164608a56038239548fa9f5d1632dc651b42aac982502cf27","schema_version":"1.0","event_id":"sha256:2061575616be253164608a56038239548fa9f5d1632dc651b42aac982502cf27"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:WX2TIV2ZQ3BM5SSXUA5NEILQ74","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mid-infrared supercontinuum generation in tapered chalcogenide fiber for producing octave-spanning frequency comb around 3 {\\mu}m","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Alireza Marandi, Charles W. Rudy, Evgeny M. Dianov, Konstantin L. Vodopyanov, Robert L. Byer, Victor G. Plotnichenko","submitted_at":"2012-08-21T01:11:46Z","abstract_excerpt":"We demonstrate mid-infrared (mid-IR) supercontinuum generation (SCG) with instantaneous bandwidth from 2.2 to 5 {\\mu}m at 40 dB below the peak, covering the wavelength range desirable for molecular spectroscopy and numerous other applications. The SCG occurs in a tapered As2S3 fiber prepared by in-situ tapering and is pumped by femtosecond pulses from the subharmonic of a mode-locked Er-doped fiber laser. Interference with a narrow linewidth c.w. laser verifies that the coherence properties of the near-IR frequency comb have been preserved through these cascaded nonlinear processes. With this "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.4155","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":"2026-05-18T03:43:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yxHK1uNeFtaYt2aTOp2h9fY0kxpRS/zfDTkFRvoXOpVjQqvkIXgdcWDbaHoi4TDl12KR9Svf/N7dbywbTMh6Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T11:33:49.098994Z"},"content_sha256":"e11f2a307e84164595e59cd419c4301331a9607a16dfa13f0c632bfdf2bbda55","schema_version":"1.0","event_id":"sha256:e11f2a307e84164595e59cd419c4301331a9607a16dfa13f0c632bfdf2bbda55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WX2TIV2ZQ3BM5SSXUA5NEILQ74/bundle.json","state_url":"https://pith.science/pith/WX2TIV2ZQ3BM5SSXUA5NEILQ74/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WX2TIV2ZQ3BM5SSXUA5NEILQ74/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":"2026-05-23T11:33:49Z","links":{"resolver":"https://pith.science/pith/WX2TIV2ZQ3BM5SSXUA5NEILQ74","bundle":"https://pith.science/pith/WX2TIV2ZQ3BM5SSXUA5NEILQ74/bundle.json","state":"https://pith.science/pith/WX2TIV2ZQ3BM5SSXUA5NEILQ74/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WX2TIV2ZQ3BM5SSXUA5NEILQ74/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:WX2TIV2ZQ3BM5SSXUA5NEILQ74","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":"9ae80dc8270f9bd7a96dd0bebf8edb2d5d45656f881912f6b41f3e1a8acac137","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-08-21T01:11:46Z","title_canon_sha256":"e8d0ff4fdf79eeda7fd9a4dbbe1b2857840521575c8739a3b71109291ae1ee13"},"schema_version":"1.0","source":{"id":"1208.4155","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.4155","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"arxiv_version","alias_value":"1208.4155v1","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.4155","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"pith_short_12","alias_value":"WX2TIV2ZQ3BM","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"WX2TIV2ZQ3BM5SSX","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"WX2TIV2Z","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:e11f2a307e84164595e59cd419c4301331a9607a16dfa13f0c632bfdf2bbda55","target":"graph","created_at":"2026-05-18T03:43:41Z","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 demonstrate mid-infrared (mid-IR) supercontinuum generation (SCG) with instantaneous bandwidth from 2.2 to 5 {\\mu}m at 40 dB below the peak, covering the wavelength range desirable for molecular spectroscopy and numerous other applications. The SCG occurs in a tapered As2S3 fiber prepared by in-situ tapering and is pumped by femtosecond pulses from the subharmonic of a mode-locked Er-doped fiber laser. Interference with a narrow linewidth c.w. laser verifies that the coherence properties of the near-IR frequency comb have been preserved through these cascaded nonlinear processes. With this ","authors_text":"Alireza Marandi, Charles W. Rudy, Evgeny M. Dianov, Konstantin L. Vodopyanov, Robert L. Byer, Victor G. Plotnichenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-08-21T01:11:46Z","title":"Mid-infrared supercontinuum generation in tapered chalcogenide fiber for producing octave-spanning frequency comb around 3 {\\mu}m"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.4155","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":"sha256:2061575616be253164608a56038239548fa9f5d1632dc651b42aac982502cf27","target":"record","created_at":"2026-05-18T03:43:41Z","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":"9ae80dc8270f9bd7a96dd0bebf8edb2d5d45656f881912f6b41f3e1a8acac137","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-08-21T01:11:46Z","title_canon_sha256":"e8d0ff4fdf79eeda7fd9a4dbbe1b2857840521575c8739a3b71109291ae1ee13"},"schema_version":"1.0","source":{"id":"1208.4155","kind":"arxiv","version":1}},"canonical_sha256":"b5f534575986c2ceca57a03ad22170ff27410283b89e80aa795a7d8224ff3e3b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5f534575986c2ceca57a03ad22170ff27410283b89e80aa795a7d8224ff3e3b","first_computed_at":"2026-05-18T03:43:41.844189Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:41.844189Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qi7rE/cKo/7uaxvFKFq8FHHj3I7nSRC5ENOQtJVKJvfgMBmw/Hkiw2+9noT5CwmXdQ9NKWi3NcjXBGi0XcZcBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:41.844980Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.4155","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2061575616be253164608a56038239548fa9f5d1632dc651b42aac982502cf27","sha256:e11f2a307e84164595e59cd419c4301331a9607a16dfa13f0c632bfdf2bbda55"],"state_sha256":"a663996e24c74653181f473d81f90ae301e25097c61d87a991516e006b9cffa5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P3DP8utNNMIacPiL3MqEKwIhLo74ExDX3nr8Ri/zm6HhXe8qKd4rx6IA676LifDgct9t04c/4GxVUGR9XV56AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T11:33:49.101491Z","bundle_sha256":"7a272e9471e087d7907a7b600bb23b47399cea32e54818af9069ddc5c2f0296c"}}