{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:CCSUN3WKVDQ53T547U66MWFGYM","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":"ec97b562a6e53b235e4fe1b7618f2d2e7e4610a512ea3e4888094acfec82c01a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-04-27T20:06:32Z","title_canon_sha256":"fb3c8809fb4b3242b11c7581a8990dbc5bc3d3e93b33daa8d096de88cac65c62"},"schema_version":"1.0","source":{"id":"2104.14983","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.14983","created_at":"2026-07-05T02:36:28Z"},{"alias_kind":"arxiv_version","alias_value":"2104.14983v1","created_at":"2026-07-05T02:36:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.14983","created_at":"2026-07-05T02:36:28Z"},{"alias_kind":"pith_short_12","alias_value":"CCSUN3WKVDQ5","created_at":"2026-07-05T02:36:28Z"},{"alias_kind":"pith_short_16","alias_value":"CCSUN3WKVDQ53T54","created_at":"2026-07-05T02:36:28Z"},{"alias_kind":"pith_short_8","alias_value":"CCSUN3WK","created_at":"2026-07-05T02:36:28Z"}],"graph_snapshots":[{"event_id":"sha256:dfeab73f1317f5363275fc74030d2c748283b277e9ffbbad94af7123fa5de01b","target":"graph","created_at":"2026-07-05T02:36:28Z","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/2104.14983/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We perform a numerical analysis of mid-infrared photoluminescence emitted by praseodymium (III) doped chalcogenide selenide glass pumped at near-infrared wavelengths. The results obtained show that an effective inversion of level populations can be achieved using both 1480 nm and 1595 nm laser diodes. The rate of the spontaneous emission achieved when pumping at 1480 nm and 1595 nm is comparable to this achieved using the standard pumping wavelength of 2040 nm.","authors_text":"A.B. Seddon, D. Furniss, E. Barney, E. Beres-Pawlik, H. Sakr, L. Sojka, R. Piramidowicz, S. Sujecki, T.M. Benson, Z. Tang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-04-27T20:06:32Z","title":"A study of MIR photoluminescence from Pr$^{3+}$ doped chalcogenide fibers pumped at near-infrared wavelengths"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.14983","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:eaf9aa68ce8e6615e54434b40927048a0e28de536e668f854d77e9fc42d1f3a8","target":"record","created_at":"2026-07-05T02:36:28Z","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":"ec97b562a6e53b235e4fe1b7618f2d2e7e4610a512ea3e4888094acfec82c01a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-04-27T20:06:32Z","title_canon_sha256":"fb3c8809fb4b3242b11c7581a8990dbc5bc3d3e93b33daa8d096de88cac65c62"},"schema_version":"1.0","source":{"id":"2104.14983","kind":"arxiv","version":1}},"canonical_sha256":"10a546eecaa8e1ddcfbcfd3de658a6c3255d66c79df52a22b491ed434548c6f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"10a546eecaa8e1ddcfbcfd3de658a6c3255d66c79df52a22b491ed434548c6f0","first_computed_at":"2026-07-05T02:36:28.851595Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:36:28.851595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Hkiffr8f8bTrbbSqcujeCPjPZUCAMbr2R/OQG0uZ23kzXMBI2w4peGXMZTI+BDSMqak8vJqhCQyXQxvaZL0GBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:36:28.851999Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.14983","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eaf9aa68ce8e6615e54434b40927048a0e28de536e668f854d77e9fc42d1f3a8","sha256:dfeab73f1317f5363275fc74030d2c748283b277e9ffbbad94af7123fa5de01b"],"state_sha256":"672a0188b630520dda7037c7b03d342832be1f82876a7a28d69019e18d21317e"}