{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:5CU2OKZULXFIR7RXKWPCR4L3AR","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":"838b032c9d4d35f350ea341beed92db4cddafde25aa493a714cbb4dd1e22683b","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-01T07:51:17Z","title_canon_sha256":"4e3f733d7be6a23b74a3c297659c172f67081d552daab198e8b50afca469d89f"},"schema_version":"1.0","source":{"id":"1409.0311","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.0311","created_at":"2026-05-18T01:42:11Z"},{"alias_kind":"arxiv_version","alias_value":"1409.0311v1","created_at":"2026-05-18T01:42:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.0311","created_at":"2026-05-18T01:42:11Z"},{"alias_kind":"pith_short_12","alias_value":"5CU2OKZULXFI","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5CU2OKZULXFIR7RX","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5CU2OKZU","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:86de63ea6e9fc52c36e4f3eabd1835384c7f3789ed9d22262678230717631dad","target":"graph","created_at":"2026-05-18T01:42:11Z","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 report here fabrication of interdigitated photoconductive antenna (iPCA) terahertz (THz) emitters based on plasmonic electrode design. Novel design of this iPCA enables it to work without microlens array focusing, which is otherwise required for photo excitation of selective photoconductive regions to avoid the destructive interference of emitted THz radiation from oppositely biased regions. Benefit of iPCA over single active region PCA is that photo excitation can be done at larger area, hence avoiding the saturation effected at higher optical excitation density. The emitted THz radiation ","authors_text":"Abhishek Singh, S. S. Prabhu","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-01T07:51:17Z","title":"Microlensless Interdigitated Photoconductive Terahertz Emitters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.0311","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":"sha256:38c8a9612eaf01f46f295fd4e34fb76b63755bcabd7024359eb3ad8d1606256a","target":"record","created_at":"2026-05-18T01:42:11Z","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":"838b032c9d4d35f350ea341beed92db4cddafde25aa493a714cbb4dd1e22683b","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-01T07:51:17Z","title_canon_sha256":"4e3f733d7be6a23b74a3c297659c172f67081d552daab198e8b50afca469d89f"},"schema_version":"1.0","source":{"id":"1409.0311","kind":"arxiv","version":1}},"canonical_sha256":"e8a9a72b345dca88fe37559e28f17b044775e60d67165920b9e90df0d186eba7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e8a9a72b345dca88fe37559e28f17b044775e60d67165920b9e90df0d186eba7","first_computed_at":"2026-05-18T01:42:11.339393Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:11.339393Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dTQSeBOrAh0jhKKZWhUWQM77vYv2KuRrEGf0djiX9MAMjSs0ZxGG4aZeXA9da9nC28tkdJoG0seJ9c+kIU2gDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:11.339900Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.0311","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38c8a9612eaf01f46f295fd4e34fb76b63755bcabd7024359eb3ad8d1606256a","sha256:86de63ea6e9fc52c36e4f3eabd1835384c7f3789ed9d22262678230717631dad"],"state_sha256":"fe4bef856dc4fbc4018eb20c25f0c85bc14a6c3c2dce6564104e1978868c06ed"}