{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:MHB7G5AG74H6H2X7JOIDZ3CQPY","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":"421881dd501c081c03ec228b45041022365b4f420d1d67fbaf62bee84019dd4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-05-05T15:46:06Z","title_canon_sha256":"9ef2e8081a89861be3b75eb39b1ddafc27f548cb3cf4eea17a8333b39cd90975"},"schema_version":"1.0","source":{"id":"1705.02275","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02275","created_at":"2026-05-18T00:38:27Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02275v2","created_at":"2026-05-18T00:38:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02275","created_at":"2026-05-18T00:38:27Z"},{"alias_kind":"pith_short_12","alias_value":"MHB7G5AG74H6","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MHB7G5AG74H6H2X7","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MHB7G5AG","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:1875c12b91a7b9201c968f31c87fdee342732fe3f238b3183ff44a122271abbf","target":"graph","created_at":"2026-05-18T00:38:27Z","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":"Core-clad fibers on the basis of high-purity 1300 ppmw Pr(3+)-doped Ga-Ge-As-Se and 2000 ppmw Pr(3+) -doped In-Ge-As-Se-I glasses have been prepared. The minimum optical losses of the fibers are at the level of 1 dB/m in the wavelength range, where there is no influence of the praseodymium absorption. At present, it is the best result obtained for core-clad rare- earth-doped chalcogenide fibers with high dopant concentration. The fibers exhibit the broadband luminescence in the spectral range of 3.5-5.5 micron. The values of luminescence lifetime at the wavelength of 4.7 micron are within 6.5-","authors_text":"E.A. Anashkina, E.V. Karaksina, G.E. Snopatin, M.F. Churbanov, T.V. Kotereva, V.S. Shiryaev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-05-05T15:46:06Z","title":"Core-clad Pr(3+)-doped Ga(In)-Ge-As-Se-(I) glass fibers: preparation, investigation, simulation of laser characteristics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02275","kind":"arxiv","version":2},"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:ac762316307bac4f55d58c77ba13f13864158b4030ff62ef25e4ee7f0db043ee","target":"record","created_at":"2026-05-18T00:38:27Z","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":"421881dd501c081c03ec228b45041022365b4f420d1d67fbaf62bee84019dd4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-05-05T15:46:06Z","title_canon_sha256":"9ef2e8081a89861be3b75eb39b1ddafc27f548cb3cf4eea17a8333b39cd90975"},"schema_version":"1.0","source":{"id":"1705.02275","kind":"arxiv","version":2}},"canonical_sha256":"61c3f37406ff0fe3eaff4b903cec507e1ac9086170953b15d0f3e38fadfb199f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61c3f37406ff0fe3eaff4b903cec507e1ac9086170953b15d0f3e38fadfb199f","first_computed_at":"2026-05-18T00:38:27.333805Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:27.333805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ox0aZmzASFFLSurkTAcfFugX9F+Rk+oQ55OCo7b+3v1RQ4bgbLEM/DeVPpPn03gE5CXt0Lw5yl126dZCFZIHCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:27.334459Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.02275","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac762316307bac4f55d58c77ba13f13864158b4030ff62ef25e4ee7f0db043ee","sha256:1875c12b91a7b9201c968f31c87fdee342732fe3f238b3183ff44a122271abbf"],"state_sha256":"1ced351a9f453a4d3b255e148cd76251bcb48b871e48b7e6d53129d9d081a4d1"}